From 31d668b996cbff7fc5572043eb1b427fbd0c2d6b Mon Sep 17 00:00:00 2001
From: Evgeny Redikultsev <effect-project@yandex.ru>
Date: Sun, 2 Jun 2024 16:56:44 +0500
Subject: [PATCH] Smart rounding was ajusted

---
 .../Entities/ColorMaps/IValueColorArray.cs    |  13 ++
 .../Entities/ColorMaps/IValueColorRange.cs    |  23 +---
 .../Entities/ColorMaps/ValueColorArray.cs     |  33 +++++
 .../Entities/ColorMaps/ValueColorRange.cs     |  15 +--
 .../Services/ColorServices/ColorOperations.cs |  17 ++-
 .../FieldViewerViewModel.cs                   |  36 ++++--
 .../Windows/UserControls/VerticalLegend.xaml  |  14 +--
 FieldVisualizer/Windows/WndFieldViewer.xaml   |   2 +-
 .../UI/Converters/Units/Area.cs               |   2 +-
 .../UI/Converters/Units/CrackWidth.cs         |  28 +++++
 .../UI/Converters/Units/Curvature.cs          |   2 +-
 .../UI/Converters/Units/Force.cs              |   2 +-
 .../UI/Converters/Units/Length.cs             |   3 +-
 .../UI/Converters/Units/Moment.cs             |   2 +-
 .../UI/Converters/Units/PlainDouble.cs        |   4 +-
 .../UI/Converters/Units/Stress.cs             |  14 ++-
 .../UI/Converters/Units/UnitBase.cs           |  51 +++++++-
 .../UI/Resources/Converters.xaml              |   1 +
 .../Infrastructure/UI/Resources/Cracks.xaml   |   2 +-
 .../ResultViewers/CrackResultFuncFactory.cs   |   7 +-
 .../ResultViewers/ForceResultFuncFactory.cs   |   9 +-
 .../ResultViewers/ShowIsoFieldResult.cs       |  10 +-
 .../CalculatorsViews/CrackDiagramLogic.cs     |  10 +-
 .../Cracks/CrackCalculatorInputDataView.xaml  |  18 ++-
 .../CrackCalculatorInputDataViewModel.cs      |  16 ++-
 .../Cracks/CrackResultView.xaml               |  20 +--
 .../CalculatorsViews/Cracks/Cracks.xaml       |   2 +-
 .../Cracks/TupleCrackResultView.xaml          |  26 ++--
 .../Cracks/TupleCrackResultViewModel.cs       |   2 +-
 .../ForceResultLogic/DiagramFactory.cs        |   8 +-
 .../InteractionDiagramLogic.cs                |  12 +-
 .../ForceResultLogic/LabelsFactory.cs         |   8 +-
 .../ForcesResultsView.xaml                    |   2 +-
 .../UserControls/SurroundDataViewModel.cs     |   7 +-
 .../ProgressViews/TraceDocumentView.xaml      |   2 +-
 .../UserControls/MultiplyDouble.xaml.cs       |   3 +-
 .../Parameters/IProcessValuePairLogic.cs      |   7 ++
 .../Models/Parameters/IValuePair.cs           |  12 ++
 .../Models/Parameters/IValueParameter.cs      |   4 +-
 .../Parameters/ProcessDoublePairLogic.cs      |  65 ++++++++++
 .../Parameters/ValuePair.cs}                  |   7 +-
 .../Models/Parameters/ValueParameter.cs       |   2 +-
 .../Services/DirectRoundLogic.cs              |  16 +++
 .../Services/FixedRoundLogic.cs               |  25 ++++
 .../Services/IDigitRoundLogic.cs              |   7 ++
 .../Services/IMathRoundLogic.cs               |   7 ++
 .../Services/SmartRoundLogic.cs               |  30 +++++
 .../Services/Units/CommonOperation.cs         | 116 ------------------
 .../Services/Units/ConvertUnitLogic.cs        |  85 +++++++++++++
 .../Services/Units/GetUnitLogic.cs            |  50 ++++++++
 .../Services/Units/IConvertUnitLogic.cs       |  13 ++
 .../Services/Units/IGetUnitLogic.cs           |   9 ++
 .../Services/Units/IStringDoublePair.cs       |  14 ---
 .../Services/Units/ProcessString.cs           |  25 ++++
 .../Services/Units/UnitsFactory.cs            |   8 +-
 .../ExportGeometryResultToCSVLogic.cs         |   2 +-
 .../NdmPrimitives/TextParametersLogic.cs      |  33 ++---
 .../ParamTests/ProcessDoublePairTest.cs       |  27 ++++
 58 files changed, 716 insertions(+), 274 deletions(-)
 create mode 100644 FieldVisualizer/Entities/ColorMaps/IValueColorArray.cs
 create mode 100644 FieldVisualizer/Entities/ColorMaps/ValueColorArray.cs
 create mode 100644 StructureHelper/Infrastructure/UI/Converters/Units/CrackWidth.cs
 create mode 100644 StructureHelperCommon/Models/Parameters/IProcessValuePairLogic.cs
 create mode 100644 StructureHelperCommon/Models/Parameters/IValuePair.cs
 create mode 100644 StructureHelperCommon/Models/Parameters/ProcessDoublePairLogic.cs
 rename StructureHelperCommon/{Services/Units/StringDoublePair.cs => Models/Parameters/ValuePair.cs} (53%)
 create mode 100644 StructureHelperCommon/Services/DirectRoundLogic.cs
 create mode 100644 StructureHelperCommon/Services/FixedRoundLogic.cs
 create mode 100644 StructureHelperCommon/Services/IDigitRoundLogic.cs
 create mode 100644 StructureHelperCommon/Services/IMathRoundLogic.cs
 create mode 100644 StructureHelperCommon/Services/SmartRoundLogic.cs
 delete mode 100644 StructureHelperCommon/Services/Units/CommonOperation.cs
 create mode 100644 StructureHelperCommon/Services/Units/ConvertUnitLogic.cs
 create mode 100644 StructureHelperCommon/Services/Units/GetUnitLogic.cs
 create mode 100644 StructureHelperCommon/Services/Units/IConvertUnitLogic.cs
 create mode 100644 StructureHelperCommon/Services/Units/IGetUnitLogic.cs
 delete mode 100644 StructureHelperCommon/Services/Units/IStringDoublePair.cs
 create mode 100644 StructureHelperCommon/Services/Units/ProcessString.cs
 create mode 100644 StructureHelperTests/UnitTests/ParamTests/ProcessDoublePairTest.cs

diff --git a/FieldVisualizer/Entities/ColorMaps/IValueColorArray.cs b/FieldVisualizer/Entities/ColorMaps/IValueColorArray.cs
new file mode 100644
index 0000000..1bed0b5
--- /dev/null
+++ b/FieldVisualizer/Entities/ColorMaps/IValueColorArray.cs
@@ -0,0 +1,13 @@
+using System.Windows.Media;
+
+namespace FieldVisualizer.Entities.ColorMaps
+{
+    public interface IValueColorArray
+    {
+        double AverageValue { get; set; }
+        Color BottomColor { get; set; }
+        double BottomValue { get; set; }
+        Color TopColor { get; set; }
+        double TopValue { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/FieldVisualizer/Entities/ColorMaps/IValueColorRange.cs b/FieldVisualizer/Entities/ColorMaps/IValueColorRange.cs
index 395993c..85063a2 100644
--- a/FieldVisualizer/Entities/ColorMaps/IValueColorRange.cs
+++ b/FieldVisualizer/Entities/ColorMaps/IValueColorRange.cs
@@ -11,25 +11,8 @@ namespace FieldVisualizer.Entities.ColorMaps
         /// Flag of activity
         /// </summary>
         bool IsActive { get; set; }
-        /// <summary>
-        /// Minimum value of range
-        /// </summary>
-        double BottomValue { get; set; }
-        /// <summary>
-        /// Average value of range
-        /// </summary>
-        double AverageValue { get; set; }
-        /// <summary>
-        /// Maximum value of range
-        /// </summary>
-        double TopValue {get;set;}
-        /// <summary>
-        /// Color correspondent to minimum value
-        /// </summary>
-        Color BottomColor { get; set; }
-        /// <summary>
-        /// Color correspondent to maximum value
-        /// </summary>
-        Color TopColor { get; set; }
+        IValueColorArray ExactValues { get; }
+        IValueColorArray RoundedValues { get; }
+
     }
 }
diff --git a/FieldVisualizer/Entities/ColorMaps/ValueColorArray.cs b/FieldVisualizer/Entities/ColorMaps/ValueColorArray.cs
new file mode 100644
index 0000000..66cd001
--- /dev/null
+++ b/FieldVisualizer/Entities/ColorMaps/ValueColorArray.cs
@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+
+namespace FieldVisualizer.Entities.ColorMaps
+{
+    public class ValueColorArray : IValueColorArray
+    {
+        /// <summary>
+        /// Minimum value of range
+        /// </summary>
+        public double BottomValue { get; set; }
+        /// <summary>
+        /// Average value of range
+        /// </summary>
+        public double AverageValue { get; set; }
+        /// <summary>
+        /// Maximum value of range
+        /// </summary>
+        public double TopValue { get; set; }
+        /// <summary>
+        /// Color correspondent to minimum value
+        /// </summary>
+        public Color BottomColor { get; set; }
+        /// <summary>
+        /// Color correspondent to maximum value
+        /// </summary>
+        public Color TopColor { get; set; }
+    }
+}
diff --git a/FieldVisualizer/Entities/ColorMaps/ValueColorRange.cs b/FieldVisualizer/Entities/ColorMaps/ValueColorRange.cs
index 695cca3..6813268 100644
--- a/FieldVisualizer/Entities/ColorMaps/ValueColorRange.cs
+++ b/FieldVisualizer/Entities/ColorMaps/ValueColorRange.cs
@@ -7,15 +7,10 @@ namespace FieldVisualizer.Entities.ColorMaps
     {
         /// <inheritdoc/>
         public bool IsActive { get; set; }
-        /// <inheritdoc/>
-        public double BottomValue { get; set; }
-        /// <inheritdoc/>
-        public double AverageValue { get; set; }
-        /// <inheritdoc/>
-        public double TopValue { get; set; }
-        /// <inheritdoc/>
-        public Color BottomColor { get; set; }
-        /// <inheritdoc/>
-        public Color TopColor { get; set; }
+
+        public IValueColorArray ExactValues { get; private set; } = new ValueColorArray();
+
+        public IValueColorArray RoundedValues { get; private set; } = new ValueColorArray();
+
     }
 }
diff --git a/FieldVisualizer/Services/ColorServices/ColorOperations.cs b/FieldVisualizer/Services/ColorServices/ColorOperations.cs
index d436432..412f247 100644
--- a/FieldVisualizer/Services/ColorServices/ColorOperations.cs
+++ b/FieldVisualizer/Services/ColorServices/ColorOperations.cs
@@ -1,6 +1,7 @@
 using FieldVisualizer.Entities.ColorMaps;
 using FieldVisualizer.Entities.Values;
 using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Services;
 using System;
 using System.Collections.Generic;
 using System.Text;
@@ -11,6 +12,7 @@ namespace FieldVisualizer.Services.ColorServices
     public static class ColorOperations
     {
         const byte Alpha = 0xff;
+        static IMathRoundLogic roundLogic = new SmartRoundLogic(); 
         /// <summary>
         /// 
         /// </summary>
@@ -23,15 +25,18 @@ namespace FieldVisualizer.Services.ColorServices
             var colorRanges = new List<IValueColorRange>(); 
             foreach (var valueRange in valueRanges)
             {
-                IValueColorRange valueColorRange = new ValueColorRange
+                var valueColorRange = new ValueColorRange
                 {
                     IsActive = true,
-                    BottomValue = valueRange.BottomValue,
-                    AverageValue = (valueRange.BottomValue + valueRange.TopValue) / 2,
-                    TopValue = valueRange.TopValue
                 };
-                valueColorRange.BottomColor = GetColorByValue(fullRange, colorMap, valueColorRange.BottomValue);
-                valueColorRange.TopColor = GetColorByValue(fullRange, colorMap, valueColorRange.TopValue);
+                valueColorRange.ExactValues.BottomValue = valueRange.BottomValue;
+                valueColorRange.ExactValues.AverageValue = (valueRange.BottomValue + valueRange.TopValue) / 2;
+                valueColorRange.ExactValues.TopValue = valueRange.TopValue;
+                valueColorRange.ExactValues.BottomColor = GetColorByValue(fullRange, colorMap, valueColorRange.ExactValues.BottomValue);
+                valueColorRange.ExactValues.TopColor = GetColorByValue(fullRange, colorMap, valueColorRange.ExactValues.TopValue);
+                valueColorRange.RoundedValues.BottomValue = roundLogic.RoundValue(valueColorRange.ExactValues.BottomValue);
+                valueColorRange.RoundedValues.AverageValue = roundLogic.RoundValue(valueColorRange.ExactValues.AverageValue);
+                valueColorRange.RoundedValues.TopValue = roundLogic.RoundValue(valueColorRange.ExactValues.TopValue);
                 colorRanges.Add(valueColorRange);
             }
             return colorRanges;
diff --git a/FieldVisualizer/ViewModels/FieldViewerViewModels/FieldViewerViewModel.cs b/FieldVisualizer/ViewModels/FieldViewerViewModels/FieldViewerViewModel.cs
index 540abf1..ca3b3a0 100644
--- a/FieldVisualizer/ViewModels/FieldViewerViewModels/FieldViewerViewModel.cs
+++ b/FieldVisualizer/ViewModels/FieldViewerViewModels/FieldViewerViewModel.cs
@@ -9,6 +9,7 @@ using FieldVisualizer.Services.ColorServices;
 using FieldVisualizer.Services.PrimitiveServices;
 using FieldVisualizer.Services.ValueRanges;
 using FieldVisualizer.Windows.UserControls;
+using StructureHelperCommon.Services;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -22,6 +23,7 @@ namespace FieldVisualizer.ViewModels.FieldViewerViewModels
 {
     public class FieldViewerViewModel : ViewModelBase, IDataErrorInfo
     {
+        private IMathRoundLogic roundLogic = new SmartRoundLogic() { DigitQuant = 3 };
         public ICommand RebuildCommand { get; }
         public ICommand ZoomInCommand { get; }
         public ICommand ZoomOutCommand { get; }
@@ -159,8 +161,8 @@ namespace FieldVisualizer.ViewModels.FieldViewerViewModels
         private ColorMapsTypes _ColorMapType;
         private IColorMap _ColorMap;
         private IValueRange valueRange;
-        private IEnumerable<IValueRange> _ValueRanges;
-        private IEnumerable<IValueColorRange> _ValueColorRanges;
+        private IEnumerable<IValueRange> valueRanges;
+        private IEnumerable<IValueColorRange> valueColorRanges;
         private bool setMinValue;
         private bool setMaxValue;
         private double crossLineX;
@@ -190,7 +192,7 @@ namespace FieldVisualizer.ViewModels.FieldViewerViewModels
             if ((PrimitiveSet is null) == false)
             {
                 ProcessPrimitives();
-                Legend.ValueColorRanges = _ValueColorRanges;
+                Legend.ValueColorRanges = valueColorRanges;
                 Legend.Refresh();
             }
         }
@@ -257,14 +259,14 @@ namespace FieldVisualizer.ViewModels.FieldViewerViewModels
         {
             SolidColorBrush brush = new SolidColorBrush();
             brush.Color = ColorOperations.GetColorByValue(valueRange, _ColorMap, valuePrimitive.Value);
-            foreach (var valueRange in _ValueColorRanges)
+            foreach (var valueRange in valueColorRanges)
             {
-                if (valuePrimitive.Value >= valueRange.BottomValue & valuePrimitive.Value <= valueRange.TopValue & (!valueRange.IsActive))
+                if (valuePrimitive.Value >= valueRange.ExactValues.BottomValue & valuePrimitive.Value <= valueRange.ExactValues.TopValue & (!valueRange.IsActive))
                 {
                     brush.Color = Colors.Gray;
                 }
             }
-            shape.ToolTip = valuePrimitive.Value;
+            shape.ToolTip = roundLogic.RoundValue(valuePrimitive.Value);
             shape.Tag = valuePrimitive;
             shape.Fill = brush;
             Canvas.SetLeft(shape, valuePrimitive.CenterX - addX - dX);
@@ -301,10 +303,24 @@ namespace FieldVisualizer.ViewModels.FieldViewerViewModels
             {
                 UserValueRange.TopValue = UserValueRange.BottomValue;
             }
-            if (SetMinValue) { valueRange.BottomValue = UserValueRange.BottomValue; } else { UserValueRange.BottomValue = valueRange.BottomValue; }
-            if (SetMaxValue) { valueRange.TopValue = UserValueRange.TopValue; } else { UserValueRange.TopValue = valueRange.TopValue; }
-            _ValueRanges = ValueRangeOperations.DivideValueRange(valueRange, RangeNumber);
-            _ValueColorRanges = ColorOperations.GetValueColorRanges(valueRange, _ValueRanges, _ColorMap);
+            if (SetMinValue == true)
+            {
+                valueRange.BottomValue = UserValueRange.BottomValue;
+            }
+            else
+            {
+                UserValueRange.BottomValue = valueRange.BottomValue;
+            }
+            if (SetMaxValue == true)
+            {
+                valueRange.TopValue = UserValueRange.TopValue;
+            }
+            else
+            {
+                UserValueRange.TopValue = valueRange.TopValue;
+            }
+            valueRanges = ValueRangeOperations.DivideValueRange(valueRange, RangeNumber);
+            valueColorRanges = ColorOperations.GetValueColorRanges(valueRange, valueRanges, _ColorMap);
         }
         private void SetCrossLine(object commandParameter)
         {
diff --git a/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml b/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml
index 5116791..58c8315 100644
--- a/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml
+++ b/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml
@@ -20,23 +20,23 @@
                                 <ColumnDefinition Width="10"/>
                             </Grid.ColumnDefinitions>
                             <CheckBox Name="ActiveCheckBox" Grid.Column="0" IsChecked="{Binding Path=IsActive}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
-                            <Rectangle Grid.Column="1"  Margin="0,2,0,2" ToolTip="{Binding Path=BottomValue}">
+                            <Rectangle Grid.Column="1"  Margin="0,2,0,2" ToolTip="{Binding Path=RoundedValues.BottomValue}">
                                 <Rectangle.Fill>
-                                    <SolidColorBrush Color="{Binding Path=BottomColor}"/>
+                                    <SolidColorBrush Color="{Binding Path=ExactValues.BottomColor}"/>
                                 </Rectangle.Fill>
                             </Rectangle>
                             <Rectangle Grid.Column="2"  Margin="0,2,0,2">
                                 <Rectangle.Fill>
                                     <LinearGradientBrush EndPoint="1,1" StartPoint="0,0">
-                                        <GradientStop Color="{Binding Path=BottomColor}"/>
-                                        <GradientStop Color="{Binding Path=TopColor}" Offset="1"/>
+                                        <GradientStop Color="{Binding Path=ExactValues.BottomColor}"/>
+                                        <GradientStop Color="{Binding Path=ExactValues.TopColor}" Offset="1"/>
                                     </LinearGradientBrush>
                                 </Rectangle.Fill>
                             </Rectangle>
-                            <TextBlock Grid.Column="2" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF868686" Text="{Binding AverageValue}"/>
-                            <Rectangle Grid.Column="3" Margin="0,2,0,2" ToolTip="{Binding Path=TopValue}">
+                            <TextBlock Grid.Column="2" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF868686" Text="{Binding RoundedValues.AverageValue}"/>
+                            <Rectangle Grid.Column="3" Margin="0,2,0,2" ToolTip="{Binding Path=RoundedValues.TopValue}">
                                 <Rectangle.Fill>
-                                    <SolidColorBrush Color="{Binding Path=TopColor}"/>
+                                    <SolidColorBrush Color="{Binding Path=ExactValues.TopColor}"/>
                                 </Rectangle.Fill>
                             </Rectangle>
                         </Grid>
diff --git a/FieldVisualizer/Windows/WndFieldViewer.xaml b/FieldVisualizer/Windows/WndFieldViewer.xaml
index 7362c15..7a290d6 100644
--- a/FieldVisualizer/Windows/WndFieldViewer.xaml
+++ b/FieldVisualizer/Windows/WndFieldViewer.xaml
@@ -6,7 +6,7 @@
         xmlns:FieldViewerControl="clr-namespace:FieldVisualizer.Windows.UserControls"
         xmlns:local="clr-namespace:FieldVisualizer.Windows"
         mc:Ignorable="d"
-        Title="FieldViewer" Height="800" Width="1200" WindowStartupLocation="CenterOwner">
+        Title="FieldViewer" Height="800" Width="1200" MinHeight="400" MinWidth="800" MaxHeight="1000" MaxWidth="1500" WindowStartupLocation="CenterScreen" ShowInTaskbar="False">
     <Grid>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="300"/>
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/Area.cs b/StructureHelper/Infrastructure/UI/Converters/Units/Area.cs
index 383fb7f..74a112d 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/Area.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/Area.cs
@@ -14,7 +14,7 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
     internal class Area : UnitBase
     {
         public override UnitTypes UnitType { get => UnitTypes.Area; }
-        public override IUnit CurrentUnit { get => CommonOperation.GetUnit(UnitType, "mm2"); }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "mm2"); }
         public override string UnitName { get => "Area"; }
     }
 }
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/CrackWidth.cs b/StructureHelper/Infrastructure/UI/Converters/Units/CrackWidth.cs
new file mode 100644
index 0000000..e520311
--- /dev/null
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/CrackWidth.cs
@@ -0,0 +1,28 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Services;
+using StructureHelperCommon.Services.Units;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Infrastructure.UI.Converters.Units
+{
+    internal class CrackWidth : UnitBase
+    {
+        public CrackWidth()
+        {
+            OperationLogic = new ConvertUnitLogic()
+            {
+                MathRoundLogic = new FixedRoundLogic()
+                {
+                    DigitQuant = 3
+                }
+            };
+        }
+        public override UnitTypes UnitType { get => UnitTypes.Length; }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "mm"); }
+        public override string UnitName { get => "Length"; }
+    }
+}
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/Curvature.cs b/StructureHelper/Infrastructure/UI/Converters/Units/Curvature.cs
index ec5a34b..1a34053 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/Curvature.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/Curvature.cs
@@ -11,7 +11,7 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
     internal class Curvature : UnitBase
     {
         public override UnitTypes UnitType { get => UnitTypes.Curvature; }
-        public override IUnit CurrentUnit { get => CommonOperation.GetUnit(UnitType, "1/mm"); }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "1/mm"); }
         public override string UnitName { get => "Curvature"; }
     }
 }
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/Force.cs b/StructureHelper/Infrastructure/UI/Converters/Units/Force.cs
index 408660d..941f47d 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/Force.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/Force.cs
@@ -13,7 +13,7 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
     internal class Force : UnitBase
     {
         public override UnitTypes UnitType { get => UnitTypes.Force; }
-        public override IUnit CurrentUnit { get => CommonOperation.GetUnit(UnitType, "kN"); }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "kN"); }
         public override string UnitName { get => "Force"; }
     }
 }
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/Length.cs b/StructureHelper/Infrastructure/UI/Converters/Units/Length.cs
index 5cac7d1..e4a01e1 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/Length.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/Length.cs
@@ -5,8 +5,9 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
 {
     internal class Length : UnitBase
     {
+        
         public override UnitTypes UnitType { get => UnitTypes.Length; }
-        public override IUnit CurrentUnit { get => CommonOperation.GetUnit(UnitType, "mm"); }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "mm"); }
         public override string UnitName { get => "Length"; }
     }
 }
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/Moment.cs b/StructureHelper/Infrastructure/UI/Converters/Units/Moment.cs
index 76f8d6d..f260d7a 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/Moment.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/Moment.cs
@@ -11,7 +11,7 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
     internal class Moment : UnitBase
     {
         public override UnitTypes UnitType { get => UnitTypes.Moment; }
-        public override IUnit CurrentUnit { get => CommonOperation.GetUnit(UnitType, "kNm"); }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "kNm"); }
         public override string UnitName { get => "Moment"; }
     }
 }
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/PlainDouble.cs b/StructureHelper/Infrastructure/UI/Converters/Units/PlainDouble.cs
index e4958d1..48cd0ac 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/PlainDouble.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/PlainDouble.cs
@@ -12,6 +12,8 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
 {
     internal class PlainDouble : IValueConverter
     {
+        IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
         {
             try
@@ -28,7 +30,7 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
         {
             try
             {
-                return CommonOperation.ConvertToDoubleChangeComma((string)value);
+                return ProcessString.ConvertCommaToCultureSettings((string)value);
             }
             catch (Exception)
             {
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/Stress.cs b/StructureHelper/Infrastructure/UI/Converters/Units/Stress.cs
index eec20ab..f07de25 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/Stress.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/Stress.cs
@@ -1,4 +1,5 @@
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Services;
 using StructureHelperCommon.Services.Units;
 using System;
 using System.Collections.Generic;
@@ -12,8 +13,19 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
 {
     internal class Stress : UnitBase
     {
+
         public override UnitTypes UnitType { get => UnitTypes.Stress; }
-        public override IUnit CurrentUnit { get => CommonOperation.GetUnit(UnitType, "MPa"); }
+        public override IUnit CurrentUnit { get => UnitLogic.GetUnit(UnitType, "MPa"); }
         public override string UnitName { get => "Stress"; }
+        public Stress()
+        {
+            OperationLogic = new ConvertUnitLogic()
+            {
+                MathRoundLogic = new SmartRoundLogic()
+                {
+                    DigitQuant = 3
+                }
+            };
+        }
     }
 }
diff --git a/StructureHelper/Infrastructure/UI/Converters/Units/UnitBase.cs b/StructureHelper/Infrastructure/UI/Converters/Units/UnitBase.cs
index ef778b0..4955cf1 100644
--- a/StructureHelper/Infrastructure/UI/Converters/Units/UnitBase.cs
+++ b/StructureHelper/Infrastructure/UI/Converters/Units/UnitBase.cs
@@ -1,4 +1,7 @@
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Parameters;
+using StructureHelperCommon.Services;
 using StructureHelperCommon.Services.Units;
 using System;
 using System.Collections.Generic;
@@ -14,19 +17,61 @@ namespace StructureHelper.Infrastructure.UI.Converters.Units
 {
     internal abstract class UnitBase : IValueConverter
     {
+        IMathRoundLogic roundLogic = new DirectRoundLogic();
+        public IConvertUnitLogic OperationLogic { get; set; } = new ConvertUnitLogic();
+        public IGetUnitLogic UnitLogic { get; set; } = new GetUnitLogic();
         public abstract UnitTypes UnitType { get; }
         public abstract IUnit CurrentUnit { get; }
         public abstract string UnitName { get;}
+        /// <summary>
+        /// From variable to user
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="targetType"></param>
+        /// <param name="parameter"></param>
+        /// <param name="culture"></param>
+        /// <returns></returns>
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
         {
-            return CommonOperation.Convert(CurrentUnit, UnitName, value);
+            var pair = OperationLogic.Convert(CurrentUnit, UnitName, value);
+            var result = pair.Value; 
+            if (parameter is not null)
+            {
+                if (parameter is string paramString)
+                {
+                    var logic = new ProcessDoublePairLogic() { DigitPlace = DigitPlace.Any };
+                    var paramPair = logic.GetValuePairByString(paramString);
+                    string paramTextPart = paramPair.Text.ToLower();
+                    int paramValuePart = (int)paramPair.Value;
+                    if (paramTextPart == "smart")
+                    {
+                        roundLogic = new SmartRoundLogic() { DigitQuant = paramValuePart };
+                    }
+                    else if (paramTextPart == "fixed")
+                    {
+                        roundLogic = new FixedRoundLogic() { DigitQuant = paramValuePart };
+                    }
+                    result = roundLogic.RoundValue(result);
+                }
+            }
+            string strValue = $"{result} {pair.Text}";
+            return strValue;
         }
-
+        /// <summary>
+        /// From user to variable
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="targetType"></param>
+        /// <param name="parameter"></param>
+        /// <param name="culture"></param>
+        /// <returns></returns>
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
             try
             {
-                return CommonOperation.ConvertBack(UnitType, CurrentUnit, value);
+                double result = OperationLogic.ConvertBack(UnitType, CurrentUnit, value);
+
+                return result;
             }
             catch (Exception)
             {
diff --git a/StructureHelper/Infrastructure/UI/Resources/Converters.xaml b/StructureHelper/Infrastructure/UI/Resources/Converters.xaml
index cfda1fd..f02301e 100644
--- a/StructureHelper/Infrastructure/UI/Resources/Converters.xaml
+++ b/StructureHelper/Infrastructure/UI/Resources/Converters.xaml
@@ -12,5 +12,6 @@
     <convertersUnits:Moment x:Key="MomentConverter"/>
     <convertersUnits:Stress x:Key="StressConverter"/>
     <convertersUnits:Curvature x:Key="Curvature"/>
+    <convertersUnits:CrackWidth x:Key="CrackWidth"/>
     <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
 </ResourceDictionary>
\ No newline at end of file
diff --git a/StructureHelper/Infrastructure/UI/Resources/Cracks.xaml b/StructureHelper/Infrastructure/UI/Resources/Cracks.xaml
index 0e11fa7..12f6a73 100644
--- a/StructureHelper/Infrastructure/UI/Resources/Cracks.xaml
+++ b/StructureHelper/Infrastructure/UI/Resources/Cracks.xaml
@@ -1,7 +1,7 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <DataTemplate x:Key="CrackTextBox">
-        <TextBlock Grid.Row="0" Text="{Binding CrackWidth, Converter={StaticResource LengthConverter}}">
+        <TextBlock Grid.Row="0" Text="{Binding CrackWidth, Converter={StaticResource LengthConverter}}" HorizontalAlignment="Right">
             <TextBlock.Style>
                 <Style TargetType="TextBlock">
                     <Style.Triggers>
diff --git a/StructureHelper/Services/ResultViewers/CrackResultFuncFactory.cs b/StructureHelper/Services/ResultViewers/CrackResultFuncFactory.cs
index 0406d96..b44a902 100644
--- a/StructureHelper/Services/ResultViewers/CrackResultFuncFactory.cs
+++ b/StructureHelper/Services/ResultViewers/CrackResultFuncFactory.cs
@@ -12,8 +12,11 @@ namespace StructureHelper.Services.ResultViewers
     
     public static class CrackResultFuncFactory
     {
-        static IUnit unitStress = CommonOperation.GetUnit(UnitTypes.Stress);
-        static IUnit unitLength = CommonOperation.GetUnit(UnitTypes.Length, "mm");
+        private static readonly IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+        private static readonly IGetUnitLogic UnitLogic = new GetUnitLogic();
+
+        static IUnit unitStress = UnitLogic.GetUnit(UnitTypes.Stress);
+        static IUnit unitLength = UnitLogic.GetUnit(UnitTypes.Length, "mm");
 
         public static List<CrackResultFunc> GetResultFuncs()
         {
diff --git a/StructureHelper/Services/ResultViewers/ForceResultFuncFactory.cs b/StructureHelper/Services/ResultViewers/ForceResultFuncFactory.cs
index b39eec5..06d5350 100644
--- a/StructureHelper/Services/ResultViewers/ForceResultFuncFactory.cs
+++ b/StructureHelper/Services/ResultViewers/ForceResultFuncFactory.cs
@@ -20,10 +20,11 @@ namespace StructureHelper.Services.ResultViewers
     }
     public static class ForceResultFuncFactory
     {
-        static IUnit unitForce = CommonOperation.GetUnit(UnitTypes.Force);
-        static IUnit unitStress = CommonOperation.GetUnit(UnitTypes.Stress);
-        static IUnit unitMoment = CommonOperation.GetUnit(UnitTypes.Moment);
-        static IUnit unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
+        static IGetUnitLogic unitLogic = new GetUnitLogic();
+        static IUnit unitForce = unitLogic.GetUnit(UnitTypes.Force);
+        static IUnit unitStress = unitLogic.GetUnit(UnitTypes.Stress);
+        static IUnit unitMoment = unitLogic.GetUnit(UnitTypes.Moment);
+        static IUnit unitCurvature = unitLogic.GetUnit(UnitTypes.Curvature);
 
         static readonly IStressLogic stressLogic = new StressLogic();
         public static List<ForceResultFunc> GetResultFuncs(FuncsTypes funcsType = FuncsTypes.Full)
diff --git a/StructureHelper/Services/ResultViewers/ShowIsoFieldResult.cs b/StructureHelper/Services/ResultViewers/ShowIsoFieldResult.cs
index 67f3170..ef0762a 100644
--- a/StructureHelper/Services/ResultViewers/ShowIsoFieldResult.cs
+++ b/StructureHelper/Services/ResultViewers/ShowIsoFieldResult.cs
@@ -5,6 +5,7 @@ using LoaderCalculator.Data.Ndms;
 using LoaderCalculator.Data.ResultData;
 using LoaderCalculator.Logics;
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Services;
 using StructureHelperLogics.NdmCalculations.Cracking;
 using StructureHelperLogics.NdmCalculations.Triangulations;
 using System;
@@ -17,6 +18,7 @@ namespace StructureHelper.Services.ResultViewers
 {
     public static class ShowIsoFieldResult
     {
+        static IMathRoundLogic roundLogic = new SmartRoundLogic() { DigitQuant = 3 };
         public static void ShowResult(IStrainMatrix strainMatrix, IEnumerable<INdm> ndms, IEnumerable<ForceResultFunc> resultFuncs)
         {
             var primitiveSets = GetPrimitiveSets(strainMatrix, ndms, resultFuncs);
@@ -59,7 +61,9 @@ namespace StructureHelper.Services.ResultViewers
 
         private static IValuePrimitive ProcessNdm(CrackResultFunc valDelegate, RebarCrackResult rebarResult)
         {
-            var val = valDelegate.ResultFunction.Invoke(rebarResult) * valDelegate.UnitFactor;
+            double delegateResult = valDelegate.ResultFunction.Invoke(rebarResult);
+            var val = delegateResult * valDelegate.UnitFactor;
+            //val = roundLogic.RoundValue(val);
             IValuePrimitive valuePrimitive;
             var rebarNdm = rebarResult.RebarPrimitive.GetRebarNdm(new TriangulationOptions()
             {
@@ -73,7 +77,9 @@ namespace StructureHelper.Services.ResultViewers
 
         private static IValuePrimitive ProcessNdm(IStrainMatrix strainMatrix, ForceResultFunc valDelegate, INdm ndm)
         {
-            double val = valDelegate.ResultFunction.Invoke(strainMatrix, ndm) * valDelegate.UnitFactor;
+            double delegateResult = valDelegate.ResultFunction.Invoke(strainMatrix, ndm);
+            double val = delegateResult * valDelegate.UnitFactor;
+            //val = roundLogic.RoundValue(val);
             IValuePrimitive valuePrimitive;
             if (ndm is IRectangleNdm shapeNdm)
             {
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs
index ea03e2b..0a41407 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs
@@ -21,6 +21,8 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 {
     internal class CrackDiagramLogic : ILongProcessLogic
     {
+        static IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+        static IGetUnitLogic unitLogic = new GetUnitLogic();
         static readonly CrackForceCalculator calculator = new();
         private ITriangulatePrimitiveLogic triangulateLogic;
 
@@ -67,9 +69,9 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
             arrayParameter = new ArrayParameter<double>(ValidTupleList.Count(), labels);
             CalculateWithCrack(ValidTupleList,
                 NdmPrimitives,
-                CommonOperation.GetUnit(UnitTypes.Force),
-                CommonOperation.GetUnit(UnitTypes.Moment),
-                CommonOperation.GetUnit(UnitTypes.Curvature));
+                unitLogic.GetUnit(UnitTypes.Force),
+                unitLogic.GetUnit(UnitTypes.Moment),
+                unitLogic.GetUnit(UnitTypes.Curvature));
         }
 
         public void ShowWindow()
@@ -152,7 +154,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
             const string crc = "Crc";
             const string crcFactor = "CrcSofteningFactor";
             var labels = LabelsFactory.GetCommonLabels();
-            IUnit unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
+            IUnit unitCurvature = unitLogic.GetUnit(UnitTypes.Curvature);
             var crclabels = new List<string>
             {
                 $"{crc}{GeometryNames.CurvFstName}, {unitCurvature.Name}",
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataView.xaml b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataView.xaml
index 0a79423..d09396a 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataView.xaml
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataView.xaml
@@ -6,13 +6,29 @@
         xmlns:local="clr-namespace:StructureHelper.Windows.CalculationWindows.CalculatorsViews"
         d:DataContext="{d:DesignInstance local:CrackCalculatorInputDataViewModel}"
         mc:Ignorable="d"
-        Title="CrackCalculatorInputDataView" Height="390" Width="400" MinHeight="300" MinWidth="400" ResizeMode="NoResize" WindowStartupLocation="CenterScreen" Closing="Window_Closing">
+        Title="{Binding WindowTitle}" Height="390" Width="400" MinHeight="300" MinWidth="400"
+        ResizeMode="NoResize" WindowStartupLocation="CenterScreen"
+        Closing="Window_Closing" ShowInTaskbar="False" Icon="{Binding Mode=OneWay, Source={StaticResource CrackCalculator}}"
+        >
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition/>
             <RowDefinition Height="35"/>
         </Grid.RowDefinitions>
         <TabControl>
+            <TabItem Header="General">
+                <StackPanel>
+                    <Grid>
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="100"/>
+                            <ColumnDefinition Width="300"/>
+                        </Grid.ColumnDefinitions>
+                        <TextBlock Text="Name"/>
+                        <TextBox Grid.Column="1" Text="{Binding Name}"/>
+                    </Grid>
+                </StackPanel>
+                
+            </TabItem>
             <TabItem Header="Forces">
                 <ContentControl ContentTemplate="{StaticResource SourceToTarget}" Content="{Binding CombinationViewModel}"/>
             </TabItem>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataViewModel.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataViewModel.cs
index c1d9af7..0cd6bb9 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataViewModel.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackCalculatorInputDataViewModel.cs
@@ -14,12 +14,25 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 {
     public class CrackCalculatorInputDataViewModel : OkCancelViewModelBase
     {
+        private CrackCalculator calculator;
         CrackInputData crackInputData;
         private bool setUserValueSofteningFactor;
         private double softeningFactor;
+        private string name;
 
         public SourceTargetVM<IForceAction> CombinationViewModel { get; }
         public SourceTargetVM<PrimitiveBase> PrimitivesViewModel { get; private set; }
+        public string WindowTitle => "Crack calculator: " + Name;
+        public string Name
+        {
+            get => calculator.Name;
+            set
+            {
+                calculator.Name = value;
+                OnPropertyChanged(nameof(Name));
+                OnPropertyChanged(nameof(WindowTitle));
+            }
+        }
         public bool SetSofteningFactor
         {
             get => crackInputData.UserCrackInputData.SetSofteningFactor;
@@ -78,7 +91,8 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 
         public CrackCalculatorInputDataViewModel(IEnumerable<INdmPrimitive> allowedPrimitives, IEnumerable<IForceAction> allowedCombinations, CrackCalculator crackCalculator)
         {
-            crackInputData = crackCalculator.InputData;
+            calculator = crackCalculator;
+            crackInputData = calculator.InputData;
             CombinationViewModel = SourceTargetFactory.GetSourceTargetVM(allowedCombinations, crackInputData.ForceActions);
             PrimitivesViewModel = SourceTargetFactory.GetSourceTargetVM(allowedPrimitives, crackInputData.Primitives);
         }
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackResultView.xaml b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackResultView.xaml
index c4abe14..549134c 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackResultView.xaml
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/CrackResultView.xaml
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:StructureHelper.Windows.CalculationWindows.CalculatorsViews"
         d:DataContext="{d:DesignInstance local:CrackResultViewModel}"
         mc:Ignorable="d"
-        Title="Result of calculations of crack" Height="450" Width="800" MinHeight="300" MinWidth="600" MaxHeight="800" MaxWidth="1000" WindowStartupLocation="CenterScreen">
+        Title="Result of calculations of crack" Height="450" Width="800" MinHeight="300" MinWidth="600" MaxHeight="800" MaxWidth="1000" WindowStartupLocation="CenterScreen" ShowInTaskbar="False">
     <Window.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
@@ -55,8 +55,8 @@
                                         <RowDefinition Height="*"/>
                                         <RowDefinition Height="*"/>
                                     </Grid.RowDefinitions>
-                                    <TextBlock Grid.Row="0" Text="Long-term" />
-                                    <TextBlock Grid.Row="1" Text="Short-term" />
+                                    <TextBlock Grid.Row="0" Text="Long-term"/>
+                                    <TextBlock Grid.Row="1" Text="Short-term"/>
                                 </Grid>
                             </DataTemplate>
                         </DataGridTemplateColumn.CellTemplate>
@@ -69,8 +69,8 @@
                                         <RowDefinition Height="*"/>
                                         <RowDefinition Height="*"/>
                                     </Grid.RowDefinitions>
-                                    <TextBlock Grid.Row="0" Text="{Binding InputData.LongTermTuple.Mx, Converter={StaticResource MomentConverter}}" />
-                                    <TextBlock Grid.Row="1" Text="{Binding InputData.ShortTermTuple.Mx, Converter={StaticResource MomentConverter}}" />
+                                    <TextBlock Grid.Row="0" Text="{Binding InputData.LongTermTuple.Mx, Converter={StaticResource MomentConverter}}" HorizontalAlignment="Right" />
+                                    <TextBlock Grid.Row="1" Text="{Binding InputData.ShortTermTuple.Mx, Converter={StaticResource MomentConverter}}" HorizontalAlignment="Right" />
                                 </Grid>
                             </DataTemplate>
                         </DataGridTemplateColumn.CellTemplate>
@@ -83,8 +83,8 @@
                                         <RowDefinition Height="*"/>
                                         <RowDefinition Height="*"/>
                                     </Grid.RowDefinitions>
-                                    <TextBlock Grid.Row="0" Text="{Binding InputData.LongTermTuple.My, Converter={StaticResource MomentConverter}}" />
-                                    <TextBlock Grid.Row="1" Text="{Binding InputData.ShortTermTuple.My, Converter={StaticResource MomentConverter}}" />
+                                    <TextBlock Grid.Row="0" Text="{Binding InputData.LongTermTuple.My, Converter={StaticResource MomentConverter}}" HorizontalAlignment="Right"/>
+                                    <TextBlock Grid.Row="1" Text="{Binding InputData.ShortTermTuple.My, Converter={StaticResource MomentConverter}}" HorizontalAlignment="Right" />
                                 </Grid>
                             </DataTemplate>
                         </DataGridTemplateColumn.CellTemplate>
@@ -97,13 +97,13 @@
                                         <RowDefinition Height="*"/>
                                         <RowDefinition Height="*"/>
                                     </Grid.RowDefinitions>
-                                    <TextBlock Grid.Row="0" Text="{Binding InputData.LongTermTuple.Nz, Converter={StaticResource MomentConverter}}" />
-                                    <TextBlock Grid.Row="1" Text="{Binding InputData.ShortTermTuple.Nz, Converter={StaticResource ForceConverter}}" />
+                                    <TextBlock Grid.Row="0" Text="{Binding InputData.LongTermTuple.Nz, Converter={StaticResource ForceConverter}}" HorizontalAlignment="Right" />
+                                    <TextBlock Grid.Row="1" Text="{Binding InputData.ShortTermTuple.Nz, Converter={StaticResource ForceConverter}}" HorizontalAlignment="Right" />
                                 </Grid>
                             </DataTemplate>
                         </DataGridTemplateColumn.CellTemplate>
                     </DataGridTemplateColumn>
-                    <DataGridTemplateColumn Header="Crack width" Width="140">
+                    <DataGridTemplateColumn Header="Crack width" Width="80">
                         <DataGridTemplateColumn.CellTemplate>
                             <DataTemplate>
                                 <ContentControl ContentTemplate="{StaticResource CrackGrid}" Content="{Binding}"/>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/Cracks.xaml b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/Cracks.xaml
index 0e11fa7..0064bfd 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/Cracks.xaml
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/Cracks.xaml
@@ -1,7 +1,7 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <DataTemplate x:Key="CrackTextBox">
-        <TextBlock Grid.Row="0" Text="{Binding CrackWidth, Converter={StaticResource LengthConverter}}">
+        <TextBlock Grid.Row="0" Text="{Binding CrackWidth, Converter={StaticResource CrackWidth}, ConverterParameter='Fixed3'}" HorizontalAlignment="Right">
             <TextBlock.Style>
                 <Style TargetType="TextBlock">
                     <Style.Triggers>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultView.xaml b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultView.xaml
index 529033a..94b8a54 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultView.xaml
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultView.xaml
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:StructureHelper.Windows.CalculationWindows.CalculatorsViews"
         d:DataContext="{d:DesignInstance local:TupleCrackResultViewModel}"
         mc:Ignorable="d"
-        Title="{Binding WindowName}" Height="450" Width="1000" MinHeight="300" MinWidth="500" MaxHeight="1000" MaxWidth="1200" WindowStartupLocation="CenterScreen">
+        Title="{Binding WindowTitle}" Height="450" Width="900" MinHeight="300" MinWidth="500" MaxHeight="1000" MaxWidth="1400" WindowStartupLocation="CenterScreen" ShowInTaskbar="False">
     <Window.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
@@ -51,7 +51,7 @@
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
                 </DataGridTemplateColumn>
-                <DataGridTemplateColumn Header="Softening factor" Width="120">
+                <DataGridTemplateColumn Header="Softening factor" Width="100">
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
                             <Grid>
@@ -59,13 +59,13 @@
                                     <RowDefinition Height="*"/>
                                     <RowDefinition Height="*"/>
                                 </Grid.RowDefinitions>
-                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.SofteningFactor, Converter={StaticResource PlainDouble}}" />
-                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.SofteningFactor, Converter={StaticResource PlainDouble}}" />
+                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.SofteningFactor, Converter={StaticResource PlainDouble}, StringFormat=F3}" HorizontalAlignment="Right" />
+                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.SofteningFactor, Converter={StaticResource PlainDouble}, StringFormat=F3}" HorizontalAlignment="Right" />
                             </Grid>
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
                 </DataGridTemplateColumn>
-                <DataGridTemplateColumn Header="Rebar stress" Width="120">
+                <DataGridTemplateColumn Header="Rebar stress" Width="80">
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
                             <Grid>
@@ -73,13 +73,13 @@
                                     <RowDefinition Height="*"/>
                                     <RowDefinition Height="*"/>
                                 </Grid.RowDefinitions>
-                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.RebarStressResult.RebarStress, Converter={StaticResource StressConverter}}"/>
-                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.RebarStressResult.RebarStress, Converter={StaticResource StressConverter}}"/>
+                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.RebarStressResult.RebarStress, Converter={StaticResource StressConverter}, ConverterParameter='Smart3'}" HorizontalAlignment="Right"/>
+                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.RebarStressResult.RebarStress, Converter={StaticResource StressConverter}, ConverterParameter='Smart3'}" HorizontalAlignment="Right"/>
                             </Grid>
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
                 </DataGridTemplateColumn>
-                <DataGridTemplateColumn Header="Rebar strain" Width="120">
+                <DataGridTemplateColumn Header="Rebar strain" Width="80">
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
                             <Grid>
@@ -87,8 +87,8 @@
                                     <RowDefinition Height="*"/>
                                     <RowDefinition Height="*"/>
                                 </Grid.RowDefinitions>
-                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.RebarStressResult.RebarStrain}"/>
-                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.RebarStressResult.RebarStrain}"/>
+                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.RebarStressResult.RebarStrain, StringFormat=F5}" HorizontalAlignment="Right"/>
+                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.RebarStressResult.RebarStrain, StringFormat=F5}" HorizontalAlignment="Right"/>
                             </Grid>
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
@@ -101,13 +101,13 @@
                                     <RowDefinition Height="*"/>
                                     <RowDefinition Height="*"/>
                                 </Grid.RowDefinitions>
-                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.RebarStressResult.ConcreteStrain}"/>
-                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.RebarStressResult.ConcreteStrain}"/>
+                                <TextBlock Grid.Row="0" Text="{Binding LongTermResult.RebarStressResult.ConcreteStrain, StringFormat=F5}" HorizontalAlignment="Right"/>
+                                <TextBlock Grid.Row="1" Text="{Binding ShortTermResult.RebarStressResult.ConcreteStrain, StringFormat=F5}" HorizontalAlignment="Right"/>
                             </Grid>
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
                 </DataGridTemplateColumn>
-                <DataGridTemplateColumn Header="Crack width" Width="140">
+                <DataGridTemplateColumn Header="Crack width" Width="80">
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
                             <ContentControl ContentTemplate="{StaticResource CrackGrid}" Content="{Binding}"/>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultViewModel.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultViewModel.cs
index e2dbf3c..8f5d5d5 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultViewModel.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/Cracks/TupleCrackResultViewModel.cs
@@ -27,7 +27,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
         public TupleCrackResult CrackResult => crackResult;
         public List<RebarCrackResult> RebarResults => crackResult.RebarResults;
         public RebarCrackResult SelectedResult { get; set; }
-        public string WindowName => "Result of calculation of cracks for action " + crackResult.InputData.TupleName;
+        public string WindowTitle => "Result of calculation of cracks for action " + crackResult.InputData.TupleName;
         public ICommand ShowIsoFieldCommand
         {
             get
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/DiagramFactory.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/DiagramFactory.cs
index 62bda1a..2b74dd7 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/DiagramFactory.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/DiagramFactory.cs
@@ -15,6 +15,8 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
     /// </summary>
     public class DiagramFactory
     {
+        IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+        IGetUnitLogic unitLogic = new GetUnitLogic();
         private ArrayParameter<double> arrayParameter;
         /// <summary>
         /// Collection of force results
@@ -48,9 +50,9 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 
         private List<double> ProcessResult(int i)
         {
-            var unitForce = CommonOperation.GetUnit(UnitTypes.Force);
-            var unitMoment = CommonOperation.GetUnit(UnitTypes.Moment);
-            var unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
+            var unitForce = unitLogic.GetUnit(UnitTypes.Force);
+            var unitMoment = unitLogic.GetUnit(UnitTypes.Moment);
+            var unitCurvature = unitLogic.GetUnit(UnitTypes.Curvature);
 
             return new List<double>
                 {
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs
index 2a5f059..625265f 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs
@@ -25,10 +25,12 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
         const string ForceUnitString = "kN";
         const string MomentUnitString = "kNm";
 
+        IConvertUnitLogic operationLogic;
+
         //private List<ArrayParameter<double>> arrayParameters;
         private IResult result;
-        private IUnit unitForce = CommonOperation.GetUnit(UnitTypes.Force, ForceUnitString);
-        private IUnit unitMoment = CommonOperation.GetUnit(UnitTypes.Moment, MomentUnitString);
+        private IUnit unitForce;
+        private IUnit unitMoment;
         private int stepCount;
 
         private static GeometryNames GeometryNames => ProgramSetting.GeometryNames;
@@ -48,7 +50,11 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             stepCount *= InputData.CalcTerms.Count();
             stepCount *= InputData.PredicateEntries.Count();
             //arrayParameters = new();
-        }
+            operationLogic = new ConvertUnitLogic();
+            IGetUnitLogic unitLogic = new GetUnitLogic();
+            unitForce = unitLogic.GetUnit(UnitTypes.Force, ForceUnitString);
+            unitMoment = unitLogic.GetUnit(UnitTypes.Moment, MomentUnitString);
+    }
 
         private void DoCalculations()
         {
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/LabelsFactory.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/LabelsFactory.cs
index db6552e..47f58ca 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/LabelsFactory.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/LabelsFactory.cs
@@ -11,9 +11,11 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 {
     public static class LabelsFactory
     {
-        private static IUnit unitForce = CommonOperation.GetUnit(UnitTypes.Force);
-        private static IUnit unitMoment = CommonOperation.GetUnit(UnitTypes.Moment);
-        private static IUnit unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
+        static IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+        static IGetUnitLogic unitLogic = new GetUnitLogic();
+        private static IUnit unitForce = unitLogic.GetUnit(UnitTypes.Force);
+        private static IUnit unitMoment = unitLogic.GetUnit(UnitTypes.Moment);
+        private static IUnit unitCurvature = unitLogic.GetUnit(UnitTypes.Curvature);
         private static GeometryNames GeometryNames => ProgramSetting.GeometryNames;
         public static List<string> GetCommonLabels()
         {
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsView.xaml b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsView.xaml
index 3805a1e..c059250 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsView.xaml
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsView.xaml
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews"
         d:DataContext="{d:DesignInstance local:ForcesResultsViewModel}"
         mc:Ignorable="d"
-        Title="Calculation Results" Height="350" Width="850" MinHeight="300" MinWidth="400" WindowStartupLocation="CenterScreen">
+        Title="Calculation Results" Height="350" Width="850" MinHeight="300" MinWidth="400" WindowStartupLocation="CenterScreen" ShowInTaskbar="False">
     <DockPanel>
         <ToolBarTray DockPanel.Dock="Top">
             <ToolBar>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/UserControls/SurroundDataViewModel.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/UserControls/SurroundDataViewModel.cs
index db1f181..15fbb13 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/UserControls/SurroundDataViewModel.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/UserControls/SurroundDataViewModel.cs
@@ -21,7 +21,8 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
     {
         const string ForceUnitString = "kN";
         const string MomentUnitString = "kNm";
-
+        static IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+        static IGetUnitLogic unitLogic = new GetUnitLogic();
         public SurroundData SurroundData
         {
             get => surroundData; set
@@ -47,8 +48,8 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             OnPropertyChanged(nameof(ZUnitLabel));
         }
 
-        private static readonly IUnit unitForce = CommonOperation.GetUnit(UnitTypes.Force, ForceUnitString);
-        private static readonly IUnit unitMoment = CommonOperation.GetUnit(UnitTypes.Moment, MomentUnitString);
+        private static IUnit unitForce = unitLogic.GetUnit(UnitTypes.Force, ForceUnitString);
+        private static IUnit unitMoment = unitLogic.GetUnit(UnitTypes.Moment, MomentUnitString);
         private SurroundData surroundData;
 
         public IValueConverter ForceConverter { get => new Force(); }
diff --git a/StructureHelper/Windows/CalculationWindows/ProgressViews/TraceDocumentView.xaml b/StructureHelper/Windows/CalculationWindows/ProgressViews/TraceDocumentView.xaml
index 5d8f958..0e8b5c0 100644
--- a/StructureHelper/Windows/CalculationWindows/ProgressViews/TraceDocumentView.xaml
+++ b/StructureHelper/Windows/CalculationWindows/ProgressViews/TraceDocumentView.xaml
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:StructureHelper.Windows.CalculationWindows.ProgressViews"
         d:DataContext="{d:DesignInstance local:TraceDocumentVM}"
         mc:Ignorable="d"
-        Title="Trace Document Viewer" Height="450" Width="800" MinHeight="400" MinWidth="600" WindowStartupLocation="CenterScreen">
+        Title="Trace Document Viewer" Height="450" Width="800" MinHeight="400" MinWidth="600" WindowStartupLocation="CenterScreen" ShowInTaskbar="False">
     <Grid>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="*"/>
diff --git a/StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs b/StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs
index 365ccdf..856725e 100644
--- a/StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs
+++ b/StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs
@@ -25,6 +25,7 @@ namespace StructureHelper.Windows.UserControls
     /// </summary>
     public partial class MultiplyDouble : UserControl
     {
+        IConvertUnitLogic operationLogic = new ConvertUnitLogic();
         public event EventHandler ValueChanged;
 
         public MultiplyDouble()
@@ -40,7 +41,7 @@ namespace StructureHelper.Windows.UserControls
                 try
                 {
                     string s = (string)o;
-                    double factor = CommonOperation.ConvertToDoubleChangeComma(s);
+                    double factor = ProcessString.ConvertCommaToCultureSettings(s);
                     ChangeValue(factor);
                 }
                 catch(Exception ex)
diff --git a/StructureHelperCommon/Models/Parameters/IProcessValuePairLogic.cs b/StructureHelperCommon/Models/Parameters/IProcessValuePairLogic.cs
new file mode 100644
index 0000000..94d7e76
--- /dev/null
+++ b/StructureHelperCommon/Models/Parameters/IProcessValuePairLogic.cs
@@ -0,0 +1,7 @@
+namespace StructureHelperCommon.Models.Parameters
+{
+    public interface IProcessValuePairLogic<T>
+    {
+        ValuePair<T> GetValuePairByString(string s);
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperCommon/Models/Parameters/IValuePair.cs b/StructureHelperCommon/Models/Parameters/IValuePair.cs
new file mode 100644
index 0000000..6dbdce0
--- /dev/null
+++ b/StructureHelperCommon/Models/Parameters/IValuePair.cs
@@ -0,0 +1,12 @@
+namespace StructureHelperCommon.Models.Parameters
+{
+    /// <summary>
+    /// Represent pair of value with text
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    public interface IValuePair<T>
+    {
+        string Text { get; set; }
+        T Value { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperCommon/Models/Parameters/IValueParameter.cs b/StructureHelperCommon/Models/Parameters/IValueParameter.cs
index afdb75f..4f82874 100644
--- a/StructureHelperCommon/Models/Parameters/IValueParameter.cs
+++ b/StructureHelperCommon/Models/Parameters/IValueParameter.cs
@@ -7,14 +7,12 @@ using System.Windows.Media;
 
 namespace StructureHelperCommon.Models.Parameters
 {
-    public interface IValueParameter<T>
+    public interface IValueParameter<T> : IValuePair<T>
     {
         bool IsValid { get; set; }
         string Name { get; set; }
         string ShortName { get; set; }
         Color Color { get; set; }
-        string MeasurementUnit { get; set; }
-        T Value { get; set; }
         string Description { get; set; }
     }
 }
diff --git a/StructureHelperCommon/Models/Parameters/ProcessDoublePairLogic.cs b/StructureHelperCommon/Models/Parameters/ProcessDoublePairLogic.cs
new file mode 100644
index 0000000..f55c098
--- /dev/null
+++ b/StructureHelperCommon/Models/Parameters/ProcessDoublePairLogic.cs
@@ -0,0 +1,65 @@
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Services.Units;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using System.Windows.Media.Media3D;
+
+namespace StructureHelperCommon.Models.Parameters
+{
+    public enum DigitPlace
+    {
+        Start,
+        Any
+    }
+    public class ProcessDoublePairLogic : IProcessValuePairLogic<double>
+    {
+        const string digitalPattern = @"^[-]?[+]?\d*\.?\,?\d*";
+        const string allowedPattern = @"[0-9]|\.|\,";
+        const string characterPattern = "[a-z]+$";
+        const string target = "";
+
+        public DigitPlace DigitPlace { get; set; } = DigitPlace.Start;
+
+        public ValuePair<double> GetValuePairByString(string s)
+        {
+            s = s.Replace(" ", string.Empty);
+            
+            Regex regexText = new (allowedPattern);
+            string textString = regexText.Replace(s, target);
+            var textMatch = Regex.Match(textString, characterPattern, RegexOptions.IgnoreCase);
+            if (textMatch.Success == true)
+            {
+                textString = textMatch.Value.ToLower();
+            }
+            var digitalOnlyString = DigitPlace == DigitPlace.Start ? s : s.ToLower().Replace(textString, string.Empty);
+            var match = Regex.Match(digitalOnlyString, digitalPattern);
+            if (match.Success == true)
+            {
+                return GetDoubleValue(textString, match);
+            }
+            throw new StructureHelperException(ErrorStrings.DataIsInCorrect);
+        }
+
+        private static ValuePair<double> GetDoubleValue(string textString, Match match)
+        {
+            string digitalString = match.Value;
+            if (digitalString != string.Empty || digitalString != "")
+            {
+                double digit = ProcessString.ConvertCommaToCultureSettings(digitalString);
+                return new ValuePair<double>()
+                {
+                    Value = digit,
+                    Text = textString
+                };
+            }
+            else
+            {
+                throw new StructureHelperException(ErrorStrings.DataIsInCorrect + ": value does not contain digital simbols");
+            }
+        }
+    }
+}
diff --git a/StructureHelperCommon/Services/Units/StringDoublePair.cs b/StructureHelperCommon/Models/Parameters/ValuePair.cs
similarity index 53%
rename from StructureHelperCommon/Services/Units/StringDoublePair.cs
rename to StructureHelperCommon/Models/Parameters/ValuePair.cs
index 7e2cb34..8454961 100644
--- a/StructureHelperCommon/Services/Units/StringDoublePair.cs
+++ b/StructureHelperCommon/Models/Parameters/ValuePair.cs
@@ -4,11 +4,12 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace StructureHelperCommon.Services.Units
+namespace StructureHelperCommon.Models.Parameters
 {
-    internal class StringDoublePair : IStringDoublePair
+    /// <inheritdoc/>
+    public class ValuePair<T> : IValuePair<T>
     {
-        public double Digit { get; set; }
         public string Text { get; set; }
+        public T Value { get; set; }
     }
 }
diff --git a/StructureHelperCommon/Models/Parameters/ValueParameter.cs b/StructureHelperCommon/Models/Parameters/ValueParameter.cs
index 1e008ba..18d8625 100644
--- a/StructureHelperCommon/Models/Parameters/ValueParameter.cs
+++ b/StructureHelperCommon/Models/Parameters/ValueParameter.cs
@@ -13,7 +13,7 @@ namespace StructureHelperCommon.Models.Parameters
         public string Name { get; set; }
         public string ShortName { get; set; }
         public Color Color { get; set; }
-        public string MeasurementUnit { get; set; }
+        public string Text { get; set; }
         public T Value { get; set; }
         public string Description { get; set; }
     }
diff --git a/StructureHelperCommon/Services/DirectRoundLogic.cs b/StructureHelperCommon/Services/DirectRoundLogic.cs
new file mode 100644
index 0000000..cb82161
--- /dev/null
+++ b/StructureHelperCommon/Services/DirectRoundLogic.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Services
+{
+    public class DirectRoundLogic : IMathRoundLogic
+    {
+        public double RoundValue(double value)
+        {
+            return value;
+        }
+    }
+}
diff --git a/StructureHelperCommon/Services/FixedRoundLogic.cs b/StructureHelperCommon/Services/FixedRoundLogic.cs
new file mode 100644
index 0000000..d36d747
--- /dev/null
+++ b/StructureHelperCommon/Services/FixedRoundLogic.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Services
+{
+    public class FixedRoundLogic : IDigitRoundLogic
+    {
+        public int DigitQuant { get; set; }
+
+        /// <summary>
+        /// Умное окруление до нужного числа значащих цифр, например (12345, 3) дает результат 12300, например (0.12345, 3) дает результат 0,123
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="quant"></param>
+        /// <returns></returns>
+        public double RoundValue(double value)
+        {
+            double roundedValue = Math.Round(value, DigitQuant);
+            return roundedValue;
+        }
+    }
+}
diff --git a/StructureHelperCommon/Services/IDigitRoundLogic.cs b/StructureHelperCommon/Services/IDigitRoundLogic.cs
new file mode 100644
index 0000000..7b1246e
--- /dev/null
+++ b/StructureHelperCommon/Services/IDigitRoundLogic.cs
@@ -0,0 +1,7 @@
+namespace StructureHelperCommon.Services
+{
+    public interface IDigitRoundLogic : IMathRoundLogic
+    {
+        int DigitQuant { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperCommon/Services/IMathRoundLogic.cs b/StructureHelperCommon/Services/IMathRoundLogic.cs
new file mode 100644
index 0000000..3aca8d1
--- /dev/null
+++ b/StructureHelperCommon/Services/IMathRoundLogic.cs
@@ -0,0 +1,7 @@
+namespace StructureHelperCommon.Services
+{
+    public interface IMathRoundLogic
+    {
+        double RoundValue(double value);
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperCommon/Services/SmartRoundLogic.cs b/StructureHelperCommon/Services/SmartRoundLogic.cs
new file mode 100644
index 0000000..7b0d6c8
--- /dev/null
+++ b/StructureHelperCommon/Services/SmartRoundLogic.cs
@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Services
+{
+    public class SmartRoundLogic : IDigitRoundLogic
+    {
+        public int DigitQuant { get; set; } = 3;
+
+        /// <summary>
+        /// Умное окруление до нужного числа значащих цифр, например (12345, 3) дает результат 12300, например (0.12345, 3) дает результат 0,123
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="quant"></param>
+        /// <returns></returns>
+        public double RoundValue(double value)
+        {
+            if (value == 0d) return 0d;
+            double valueOrder = Math.Log10(Math.Abs(value));
+            int order = Convert.ToInt32(Math.Ceiling(valueOrder));
+            double requiredOrder = Math.Pow(10, DigitQuant - order);
+            double roundedAbsValue = Math.Round(Math.Abs(value) * requiredOrder) / requiredOrder;
+            double roundedValue = Math.Sign(value) * roundedAbsValue;
+            return roundedValue;
+        }
+    }
+}
diff --git a/StructureHelperCommon/Services/Units/CommonOperation.cs b/StructureHelperCommon/Services/Units/CommonOperation.cs
deleted file mode 100644
index 3e91fde..0000000
--- a/StructureHelperCommon/Services/Units/CommonOperation.cs
+++ /dev/null
@@ -1,116 +0,0 @@
-using StructureHelperCommon.Infrastructures.Enums;
-using StructureHelperCommon.Infrastructures.Exceptions;
-using StructureHelperCommon.Services.Units;
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using System.Text.RegularExpressions;
-using System.Windows.Documents;
-
-namespace StructureHelperCommon.Services.Units
-{
-    public static class CommonOperation
-    {
-        private static IEnumerable<IUnit> units = UnitsFactory.GetUnitCollection();
-
-        public static double ConvertToDoubleChangeComma(string s)
-        {
-            double result;
-            if (!double.TryParse(s, NumberStyles.Any, CultureInfo.CurrentCulture, out result) &&
-                !double.TryParse(s, NumberStyles.Any, CultureInfo.GetCultureInfo("en-US"), out result) &&
-                !double.TryParse(s, NumberStyles.Any, CultureInfo.InvariantCulture, out result))
-            {
-                throw new StructureHelperException($"{ErrorStrings.IncorrectValue}: {s}");
-            }
-            return result;
-        }
-
-        public static IStringDoublePair DivideIntoStringDoublePair(string s)
-        {
-            s = s.Replace(" ", "");
-            //string digitPattern = @"^[-]?[+]?\d+(\.?)|(\,?)\d*";
-            string digitPattern = @"^[-]?[+]?\d*\.?\,?\d*";
-            string textPattern = @"[0-9]|\.|\,";
-            string caracterPattern = "[a-z]+$";
-            string target = "";
-            Regex regexText = new Regex(textPattern);
-            string textString = regexText.Replace(s, target);
-            var textMatch = Regex.Match(textString, caracterPattern, RegexOptions.IgnoreCase);
-            if (textMatch.Success) {textString = textMatch.Value.ToLower();}
-            var match = Regex.Match(s, digitPattern);
-            if (match.Success)
-            {
-                string digitString = match.Value;
-                double digit = ConvertToDoubleChangeComma(digitString);
-                return new StringDoublePair() { Digit = digit, Text = textString };
-            }
-            throw new StructureHelperException(ErrorStrings.DataIsInCorrect);
-        }
-
-        public static IUnit GetUnit(UnitTypes unitType, string unitName = null)
-        {
-            if (unitName is null)
-            {
-                var boolResult = DefaultUnitNames.TryGetValue(unitType, out unitName);
-                if (boolResult == false)
-                {
-                    throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": unit type{unitType} is unknown");
-                }
-            }
-            return units.Where(u => u.UnitType == unitType & u.Name == unitName).Single();
-        }
-
-        public static Dictionary<UnitTypes, string> DefaultUnitNames => new()
-        {
-            { UnitTypes.Length, "m"},
-            { UnitTypes.Area, "m2"},
-            { UnitTypes.Force, "kN" },
-            { UnitTypes.Moment, "kNm"},
-            { UnitTypes.Stress, "MPa"},
-            { UnitTypes.Curvature, "1/m"},
-        };
-
-
-        public static string Convert(IUnit unit, string unitName, object value)
-        {
-            double val;
-            if (value != null) { val = (double)value; }
-            else { throw new Exception($"{unitName} value is null"); }
-            val *= unit.Multiplyer;
-            string strValue = $"{val} {unit.Name}";
-            return strValue;
-        }
-
-        public static double ConvertBack(UnitTypes unitType, IUnit unit, object value)
-        {
-            double val;
-            double multy;
-            double coefficient = unit.Multiplyer;
-            var strVal = value as string;
-            IStringDoublePair pair = DivideIntoStringDoublePair(strVal);
-            try
-            {
-                multy = GetMultiplyer(unitType, pair.Text);
-            }
-            catch (Exception ex)
-            {
-                multy = coefficient;
-            }
-            val = pair.Digit / multy;
-            return val;
-        }
-
-        public static double GetMultiplyer(UnitTypes unitType, string unitName)
-        {
-            try
-            {
-                return units.Where(u => u.UnitType == unitType & u.Name == unitName).Single().Multiplyer;
-            }
-            catch (Exception ex)
-            {
-                throw new StructureHelperException(ErrorStrings.DataIsInCorrect + ex);
-            }
-        }
-    }
-}
diff --git a/StructureHelperCommon/Services/Units/ConvertUnitLogic.cs b/StructureHelperCommon/Services/Units/ConvertUnitLogic.cs
new file mode 100644
index 0000000..0dbcbc1
--- /dev/null
+++ b/StructureHelperCommon/Services/Units/ConvertUnitLogic.cs
@@ -0,0 +1,85 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Models.Parameters;
+using StructureHelperCommon.Services.Units;
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Windows.Documents;
+
+namespace StructureHelperCommon.Services.Units
+{
+    public class ConvertUnitLogic : IConvertUnitLogic
+    {
+        private static IEnumerable<IUnit> units = UnitsFactory.GetUnitCollection();
+        private static IProcessValuePairLogic<double> pairLogic = new ProcessDoublePairLogic();
+
+        public IMathRoundLogic MathRoundLogic { get; set; } = new DirectRoundLogic();
+
+        public ValuePair<double> Convert(IUnit unit, string unitName, object value)
+        {
+            double val;
+            if (value != null)
+            {
+                try
+                {
+                    val = (double)value;
+                }
+                catch (Exception ex)
+                {
+                    throw new StructureHelperException($"{ErrorStrings.IncorrectValue}");
+                }
+            }
+            else
+            {
+                throw new StructureHelperException($"{ErrorStrings.ParameterIsNull}: {unitName}");
+            }
+            val *= unit.Multiplyer;
+            var pair = new ValuePair<double>
+            {
+                Text = unit.Name,
+                Value = val
+            };
+            return pair;
+        }
+
+        public double ConvertBack(UnitTypes unitType, IUnit unit, object value)
+        {
+            double val;
+            double multy;
+            double factor = unit.Multiplyer;
+            var strVal = value as string;
+            var pair = pairLogic.GetValuePairByString(strVal);
+            try
+            {
+                multy = GetMultiplyer(unitType, pair.Text);
+            }
+            catch (Exception ex)
+            {
+                multy = factor;
+            }
+            val = pair.Value / multy;
+            return val;
+        }
+
+        private double GetMultiplyer(UnitTypes unitType, string unitName)
+        {
+            try
+            {
+                return units
+                    .Where(u =>
+                    u.UnitType == unitType
+                    &
+                    u.Name == unitName)
+                    .Single()
+                    .Multiplyer;
+            }
+            catch (Exception ex)
+            {
+                throw new StructureHelperException(ErrorStrings.DataIsInCorrect + ex);
+            }
+        }
+    }
+}
diff --git a/StructureHelperCommon/Services/Units/GetUnitLogic.cs b/StructureHelperCommon/Services/Units/GetUnitLogic.cs
new file mode 100644
index 0000000..ea68c44
--- /dev/null
+++ b/StructureHelperCommon/Services/Units/GetUnitLogic.cs
@@ -0,0 +1,50 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Services.Units
+{
+    public class GetUnitLogic : IGetUnitLogic
+    {
+        private static IEnumerable<IUnit> units = UnitsFactory.GetUnitCollection();
+        private Dictionary<UnitTypes, string> defaultUnitNames;
+
+
+        public GetUnitLogic()
+        {
+            defaultUnitNames = new()
+            {
+                { UnitTypes.Length, "m"},
+                { UnitTypes.Area, "m2"},
+                { UnitTypes.Force, "kN" },
+                { UnitTypes.Moment, "kNm"},
+                { UnitTypes.Stress, "MPa"},
+                { UnitTypes.Curvature, "1/m"},
+            };
+        }
+
+        public IUnit GetUnit(UnitTypes unitType, string unitName = null)
+        {
+            if (unitName is null)
+            {
+                var boolResult = defaultUnitNames.TryGetValue(unitType, out unitName);
+                if (boolResult == false)
+                {
+                    throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": unit type{unitType} is unknown");
+                }
+            }
+            return units
+                .Where(u =>
+                u.UnitType == unitType
+                &
+                u.Name == unitName)
+                .Single();
+        }
+
+
+    }
+}
diff --git a/StructureHelperCommon/Services/Units/IConvertUnitLogic.cs b/StructureHelperCommon/Services/Units/IConvertUnitLogic.cs
new file mode 100644
index 0000000..683b2cd
--- /dev/null
+++ b/StructureHelperCommon/Services/Units/IConvertUnitLogic.cs
@@ -0,0 +1,13 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Models.Parameters;
+using System.Collections.Generic;
+
+namespace StructureHelperCommon.Services.Units
+{
+    public interface IConvertUnitLogic
+    {
+        IMathRoundLogic MathRoundLogic { get; set; }
+        ValuePair<double> Convert(IUnit unit, string unitName, object value);
+        double ConvertBack(UnitTypes unitType, IUnit unit, object value);
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperCommon/Services/Units/IGetUnitLogic.cs b/StructureHelperCommon/Services/Units/IGetUnitLogic.cs
new file mode 100644
index 0000000..40fba7a
--- /dev/null
+++ b/StructureHelperCommon/Services/Units/IGetUnitLogic.cs
@@ -0,0 +1,9 @@
+using StructureHelperCommon.Infrastructures.Enums;
+
+namespace StructureHelperCommon.Services.Units
+{
+    public interface IGetUnitLogic
+    {
+        IUnit GetUnit(UnitTypes unitType, string unitName = null);
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperCommon/Services/Units/IStringDoublePair.cs b/StructureHelperCommon/Services/Units/IStringDoublePair.cs
deleted file mode 100644
index 6856098..0000000
--- a/StructureHelperCommon/Services/Units/IStringDoublePair.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace StructureHelperCommon.Services.Units
-{
-    public interface IStringDoublePair
-    {
-        double Digit { get; }
-        string Text { get; }
-    }
-}
diff --git a/StructureHelperCommon/Services/Units/ProcessString.cs b/StructureHelperCommon/Services/Units/ProcessString.cs
new file mode 100644
index 0000000..4cf1978
--- /dev/null
+++ b/StructureHelperCommon/Services/Units/ProcessString.cs
@@ -0,0 +1,25 @@
+using StructureHelperCommon.Infrastructures.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Services.Units
+{
+    public static class ProcessString
+    {
+        public static double ConvertCommaToCultureSettings(string s)
+        {
+            double result;
+            if (!double.TryParse(s, NumberStyles.Any, CultureInfo.CurrentCulture, out result) &&
+                !double.TryParse(s, NumberStyles.Any, CultureInfo.GetCultureInfo("en-US"), out result) &&
+                !double.TryParse(s, NumberStyles.Any, CultureInfo.InvariantCulture, out result))
+            {
+                throw new StructureHelperException($"{ErrorStrings.IncorrectValue}: {s}");
+            }
+            return result;
+        }
+    }
+}
diff --git a/StructureHelperCommon/Services/Units/UnitsFactory.cs b/StructureHelperCommon/Services/Units/UnitsFactory.cs
index 53fd969..0219cba 100644
--- a/StructureHelperCommon/Services/Units/UnitsFactory.cs
+++ b/StructureHelperCommon/Services/Units/UnitsFactory.cs
@@ -5,6 +5,10 @@ namespace StructureHelperCommon.Services.Units
 {
     public static class UnitsFactory
     {
+        /// <summary>
+        /// Returns collection of unit
+        /// </summary>
+        /// <returns></returns>
         public static List<IUnit> GetUnitCollection()
         {
             List<IUnit> units = new List<IUnit>();
@@ -28,8 +32,8 @@ namespace StructureHelperCommon.Services.Units
             type = UnitTypes.Moment;
             units.Add(new Unit() { UnitType = type, Name = "Nm", Multiplyer = 1d });
             units.Add(new Unit() { UnitType = type, Name = "kNm", Multiplyer = 1e-3d });
-            units.Add(new Unit() { UnitType = type, Name = "kgfm", Multiplyer = 9.8d });
-            units.Add(new Unit() { UnitType = type, Name = "tfm", Multiplyer = 9.8e-3d });
+            units.Add(new Unit() { UnitType = type, Name = "kgfm", Multiplyer = 9.81d });
+            units.Add(new Unit() { UnitType = type, Name = "tfm", Multiplyer = 9.81e-3d });
             type = UnitTypes.Curvature;
             units.Add(new Unit() { UnitType = type, Name = "1/m", Multiplyer = 1d });
             units.Add(new Unit() { UnitType = type, Name = "1/mm", Multiplyer = 1e-3d });
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ExportGeometryResultToCSVLogic.cs b/StructureHelperLogics/NdmCalculations/Analyses/ExportGeometryResultToCSVLogic.cs
index 8c6ba64..d701a1e 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ExportGeometryResultToCSVLogic.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ExportGeometryResultToCSVLogic.cs
@@ -55,7 +55,7 @@ namespace StructureHelperLogics.NdmCalculations.Analyses
                         {
                             item.Name,
                             item.ShortName,
-                            item.MeasurementUnit,
+                            item.Text,
                             item.Value.ToString(),
                             item.Description
                         };
diff --git a/StructureHelperLogics/Services/NdmPrimitives/TextParametersLogic.cs b/StructureHelperLogics/Services/NdmPrimitives/TextParametersLogic.cs
index b4fbd24..f18e28e 100644
--- a/StructureHelperLogics/Services/NdmPrimitives/TextParametersLogic.cs
+++ b/StructureHelperLogics/Services/NdmPrimitives/TextParametersLogic.cs
@@ -18,6 +18,9 @@ namespace StructureHelperLogics.Services.NdmPrimitives
     {
         const string prefixInitial = "Initial";
         const string prefixActual = "Actual";
+        IConvertUnitLogic operationLogic = new ConvertUnitLogic();
+        IGetUnitLogic unitLogic = new GetUnitLogic();
+
         static string firstAxisName => ProgramSetting.GeometryNames.FstAxisName;
         static string secondAxisName => ProgramSetting.GeometryNames.SndAxisName;
         static IEnumerable<IUnit> units = UnitsFactory.GetUnitCollection();
@@ -42,7 +45,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
             const string name = "Summary Area";
             const string shortName = "A";
             var parameters = new List<IValueParameter<string>>();
-            var unitArea = CommonOperation.GetUnit(UnitTypes.Area, "mm2");
+            var unitArea = unitLogic.GetUnit(UnitTypes.Area, "mm2");
             var unitName = $"{unitArea.Name}";
             var unitMultiPlayer = unitArea.Multiplyer;
             var firstParameter = new ValueParameter<string>()
@@ -50,7 +53,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{name}",
                 ShortName = $"{shortName}",
-                MeasurementUnit = unitName,
+                Text = unitName,
                 Description = $"{name} of cross-section without reduction"
             };
             try
@@ -71,8 +74,8 @@ namespace StructureHelperLogics.Services.NdmPrimitives
             const string name = "Bending stiffness";
             const string shortName = "EI";
             var parameters = new List<IValueParameter<string>>();
-            var unitArea = CommonOperation.GetUnit(UnitTypes.Area, "mm2");
-            var unitStress = CommonOperation.GetUnit(UnitTypes.Stress, "MPa");
+            var unitArea = unitLogic.GetUnit(UnitTypes.Area, "mm2");
+            var unitStress = unitLogic.GetUnit(UnitTypes.Stress, "MPa");
             var unitName = $"{unitStress.Name} * {unitArea.Name} * {unitArea.Name}";
             var unitMultiPlayer = unitArea.Multiplyer * unitArea.Multiplyer * unitStress.Multiplyer;
             var firstParameter = new ValueParameter<string>()
@@ -80,7 +83,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefix} {name} {firstAxisName.ToUpper()}",
                 ShortName = $"{shortName}{firstAxisName}",
-                MeasurementUnit = unitName,
+                Text = unitName,
                 Description = $"{prefix} {name} of cross-section arbitrary {firstAxisName}-axis multiplied by {prefix} modulus"
             };
             var secondParameter = new ValueParameter<string>()
@@ -88,7 +91,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefix} {name} {secondAxisName}",
                 ShortName = $"{shortName}{secondAxisName}",
-                MeasurementUnit = unitName,
+                Text = unitName,
                 Description = $"{prefix} {name} of cross-section arbitrary {secondAxisName}-axis multiplied by {prefix} modulus"
             };
             try
@@ -120,7 +123,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefixActual}/{prefixInitial} {name} {firstAxisName.ToUpper()} ratio",
                 ShortName = $"{shortName}{firstAxisName}-ratio",
-                MeasurementUnit = "-",
+                Text = "-",
                 Description = $"{prefixActual}/{prefixInitial} {name} of cross-section arbitrary {firstAxisName}-axis ratio"
             };
             var secondParameter = new ValueParameter<string>()
@@ -128,7 +131,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefixActual}/{prefixInitial} {name} {secondAxisName} ratio",
                 ShortName = $"{shortName}{secondAxisName}-ratio",
-                MeasurementUnit = "-",
+                Text = "-",
                 Description = $"{prefixActual}/{prefixInitial} {name} of cross-section arbitrary {secondAxisName}-axis ratio"
             };
             try
@@ -155,8 +158,8 @@ namespace StructureHelperLogics.Services.NdmPrimitives
             const string name = "Longitudinal stiffness";
             const string shortName = "EA";
             var parameters = new List<IValueParameter<string>>();
-            var unitArea = CommonOperation.GetUnit(UnitTypes.Area, "mm2");
-            var unitStress = CommonOperation.GetUnit(UnitTypes.Stress, "MPa");
+            var unitArea = unitLogic.GetUnit(UnitTypes.Area, "mm2");
+            var unitStress = unitLogic.GetUnit(UnitTypes.Stress, "MPa");
             var unitName = $"{unitStress.Name} * {unitArea.Name}" ;
             var unitMultiPlayer = unitArea.Multiplyer * unitStress.Multiplyer;
             var firstParameter = new ValueParameter<string>()
@@ -164,7 +167,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefix} {name}",
                 ShortName = $"{shortName}",
-                MeasurementUnit = unitName,
+                Text = unitName,
                 Description = $"{prefix} {name} of cross-section multiplied by {prefix} modulus"
             };
             try
@@ -190,7 +193,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefixActual}/{prefixInitial} {name} ratio",
                 ShortName = $"{shortName}-ratio",
-                MeasurementUnit = "-",
+                Text = "-",
                 Description = $"{prefixActual}/{prefixInitial} {name}-ratio of cross-section"
             };
             try
@@ -216,7 +219,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
         {
             var parameters = new List<IValueParameter<string>>();
             var unitType = UnitTypes.Length;
-            var unit = CommonOperation.GetUnit(unitType, "mm");
+            var unit = unitLogic.GetUnit(unitType, "mm");
             var unitName = unit.Name;
             var unitMultiPlayer = unit.Multiplyer;
             var firstParameter = new ValueParameter<string>()
@@ -224,7 +227,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefix} Center{firstAxisName.ToUpper()}",
                 ShortName = $"{firstAxisName.ToUpper()}c",
-                MeasurementUnit = unitName,
+                Text = unitName,
                 Description = $"{prefix} Displacement of center of gravity of cross-section along {firstAxisName}-axis"
             };
             var secondParameter = new ValueParameter<string>()
@@ -232,7 +235,7 @@ namespace StructureHelperLogics.Services.NdmPrimitives
                 IsValid = true,
                 Name = $"{prefix} Center{secondAxisName.ToUpper()}",
                 ShortName = $"{secondAxisName.ToUpper()}c",
-                MeasurementUnit = unitName,
+                Text = unitName,
                 Description = $"{prefix} Displacement of center of gravity of cross-section along {secondAxisName}-axis"
             };
             try
diff --git a/StructureHelperTests/UnitTests/ParamTests/ProcessDoublePairTest.cs b/StructureHelperTests/UnitTests/ParamTests/ProcessDoublePairTest.cs
new file mode 100644
index 0000000..8ce7ab0
--- /dev/null
+++ b/StructureHelperTests/UnitTests/ParamTests/ProcessDoublePairTest.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using StructureHelperCommon.Models.Parameters;
+
+namespace StructureHelperTests.UnitTests.ParamTests
+{
+    public class ProcessDoublePairTest
+    {
+        [TestCase("100mm", DigitPlace.Start, "mm", 100d)] //Without backspace
+        [TestCase("100 mm", DigitPlace.Start, "mm", 100d)] //With backspace
+        [TestCase("Fixed3", DigitPlace.Any, "fixed", 3d)]
+        public void Run_ShouldPass(string inputString, DigitPlace digitPlace, string expectedText, double expectedValue)
+        {
+            //Arrange
+            var logic = new ProcessDoublePairLogic() { DigitPlace = digitPlace};
+            //Act
+            var result = logic.GetValuePairByString(inputString);
+            //Assert
+            Assert.AreEqual(expectedText, result.Text);
+            Assert.AreEqual(expectedValue, result.Value, 0.001d);
+        }
+    }
+}