diff --git a/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp b/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp
index 94e9b8048..c72dcdad6 100644
--- a/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp
+++ b/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp
@@ -319,8 +319,13 @@ void DialogEditWrongFormula::AngleLines()
  */
 void DialogEditWrongFormula::Increments()
 {
-    ui->checkBoxHideEmpty->setEnabled(false);
-    ShowVariable(data->DataIncrements());
+    ShowIncrementsInPreviewCalculation(false);
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEditWrongFormula::PreviewCalculations()
+{
+    ShowIncrementsInPreviewCalculation(true);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -439,6 +444,9 @@ void DialogEditWrongFormula::InitVariables()
     connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogEditWrongFormula::Increments);
     connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, ClearFilterFormulaInputs);
 
+    connect(ui->radioButtonPC, &QRadioButton::clicked, this, &DialogEditWrongFormula::PreviewCalculations);
+    connect(ui->radioButtonPC, &QRadioButton::clicked, this, ClearFilterFormulaInputs);
+
     connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogEditWrongFormula::LengthLines);
     connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, ClearFilterFormulaInputs);
 
@@ -583,6 +591,27 @@ void DialogEditWrongFormula::ShowFunctions()
     ui->tableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogEditWrongFormula::ShowIncrementsInPreviewCalculation(bool show)
+{
+    ui->checkBoxHideEmpty->setEnabled(false);
+
+    QMap<QString, QSharedPointer<VIncrement> > increments;
+
+    const QMap<QString, QSharedPointer<VIncrement> > list = data->DataIncrements();
+    QMap<QString, QSharedPointer<VIncrement> >::const_iterator i = list.constBegin();
+    while (i != list.constEnd())
+    {
+        if(i.value()->IsPreviewCalculation() == show)
+        {
+            increments.insert(i.key(), i.value());
+        }
+        ++i;
+    }
+
+    ShowVariable(increments);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void DialogEditWrongFormula::FilterVariablesEdited(const QString &filter)
 {
diff --git a/src/libs/vtools/dialogs/support/dialogeditwrongformula.h b/src/libs/vtools/dialogs/support/dialogeditwrongformula.h
index 957b9f49f..4d536f06b 100644
--- a/src/libs/vtools/dialogs/support/dialogeditwrongformula.h
+++ b/src/libs/vtools/dialogs/support/dialogeditwrongformula.h
@@ -87,6 +87,7 @@ public slots:
     void         CurvesCLength();
     void         AngleLines();
     void         Increments();
+    void         PreviewCalculations();
     void         Functions();
 protected:
     virtual void CheckState() Q_DECL_FINAL;
@@ -116,6 +117,7 @@ private:
     void ShowVariable(const QMap<key, val> &var);
     void ShowMeasurements(const QMap<QString, QSharedPointer<VMeasurement> > &var);
     void ShowFunctions();
+    void ShowIncrementsInPreviewCalculation(bool show);
 
     void SetDescription(const QString &name, qreal value, const QString &unit, const QString &description);
 };
diff --git a/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui b/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui
index 211bf7b3f..6ff4ad1fb 100644
--- a/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui
+++ b/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui
@@ -10,7 +10,7 @@
     <x>0</x>
     <y>0</y>
     <width>448</width>
-    <height>425</height>
+    <height>526</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -255,6 +255,13 @@
            </property>
           </widget>
          </item>
+         <item>
+          <widget class="QRadioButton" name="radioButtonPC">
+           <property name="text">
+            <string>Preview calculations</string>
+           </property>
+          </widget>
+         </item>
          <item>
           <widget class="QRadioButton" name="radioButtonLengthLine">
            <property name="enabled">