diff --git a/src/libs/vtools/dialogs/tools/dialogdetail.cpp b/src/libs/vtools/dialogs/tools/dialogdetail.cpp
index d6cc233ce..e82f2e704 100644
--- a/src/libs/vtools/dialogs/tools/dialogdetail.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogdetail.cpp
@@ -159,8 +159,8 @@ DialogDetail::DialogDetail(const VContainer *data, const quint32 &toolId, QWidge
     connect(ui.checkBoxGrainline, &QCheckBox::toggled, this, &DialogDetail::EnableGrainlineRotation);
     connect(ui.pushButtonRot, &QPushButton::clicked, this, &DialogDetail::EditFormula);
     connect(ui.pushButtonLen, &QPushButton::clicked, this, &DialogDetail::EditFormula);
-    connect(ui.lineEditLenFormula, &QPlainTextEdit::textChanged, this, &DialogDetail::UpdateValue);
-    connect(ui.lineEditRotFormula, &QPlainTextEdit::textChanged, this, &DialogDetail::UpdateValue);
+    connect(ui.lineEditLenFormula, &QPlainTextEdit::textChanged, this, &DialogDetail::UpdateValues);
+    connect(ui.lineEditRotFormula, &QPlainTextEdit::textChanged, this, &DialogDetail::UpdateValues);
 
     connect(ui.pushButtonShowRot, &QPushButton::clicked, this, &DialogDetail::DeployRotation);
     connect(ui.pushButtonShowLen, &QPushButton::clicked, this, &DialogDetail::DeployLength);
@@ -484,11 +484,8 @@ VDetail DialogDetail::CreateDetail() const
 
     detail.GetGrainlineGeometry() = m_oldGrainline;
     detail.GetGrainlineGeometry().SetVisible(ui.checkBoxGrainline->isChecked());
-    if (ui.checkBoxGrainline->isChecked() == true)
-    {
-        detail.GetGrainlineGeometry().SetRotation(ui.lineEditRotFormula->toPlainText());
-        detail.GetGrainlineGeometry().SetLength(ui.lineEditLenFormula->toPlainText());
-    }
+    detail.GetGrainlineGeometry().SetRotation(ui.lineEditRotFormula->toPlainText());
+    detail.GetGrainlineGeometry().SetLength(ui.lineEditLenFormula->toPlainText());
     return detail;
 }
 
@@ -835,58 +832,80 @@ void DialogDetail::ClearFields()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void DialogDetail::SetValue(QObject *pobjSender)
+void DialogDetail::UpdateValues()
 {
-    QPlainTextEdit* pleSender = qobject_cast<QPlainTextEdit*>(pobjSender);
-    SCASSERT(pleSender != 0);
+    QPlainTextEdit* apleSender[2];
+    apleSender[0] = ui.lineEditRotFormula;
+    apleSender[1] = ui.lineEditLenFormula;
+    bool bFormulasOK = true;
 
-    QString qsFormula = pleSender->toPlainText().simplified();
-    Calculator cal;
-    QString qsVal;
-    try
+    for (int i = 0; i < 2; ++i)
     {
-        qsFormula.replace("\n", " ");
-        qsFormula = qApp->TrVars()->FormulaFromUser(qsFormula, qApp->Settings()->GetOsSeparator());
-        qreal dVal;
-        dVal = cal.EvalFormula(data->PlainVariables(), qsFormula);
-        if (qIsInf(dVal) == true || qIsNaN(dVal) == true)
+        QLabel* plbVal;
+        QLabel* plbText;
+        QString qsUnit;
+        if (i == 0)
         {
-            qsVal.clear();
+            plbVal = ui.labelRot;
+            plbText = ui.labelEditRot;
+            QChar ch(0x00b0);
+            qsUnit = ch;
         }
         else
         {
-            qsVal.setNum(dVal, 'f', 5);
+            plbVal = ui.labelLen;
+            plbText = ui.labelEditLen;
+            qsUnit = " " + VDomDocument::UnitsToStr(qApp->patternUnit());
         }
-    }
-    catch (...)
-    {
-        qsVal.clear();
+
+        QString qsFormula = apleSender[i]->toPlainText().simplified();
+        Calculator cal;
+        QString qsVal;
+        try
+        {
+            qsFormula.replace("\n", " ");
+            qsFormula = qApp->TrVars()->FormulaFromUser(qsFormula, qApp->Settings()->GetOsSeparator());
+            qreal dVal;
+            dVal = cal.EvalFormula(data->PlainVariables(), qsFormula);
+            if (qIsInf(dVal) == true || qIsNaN(dVal) == true)
+            {
+                throw qmu::QmuParserError(tr("Infinite/undefined result"));
+            }
+            else if (i == 1 && dVal <= 0.0)
+            {
+                throw qmu::QmuParserError(tr("Length should be positive"));
+            }
+            else
+            {
+                qsVal.setNum(dVal, 'f', 2);
+                ChangeColor(plbText, okColor);
+            }
+        }
+        catch (...)
+        {
+            qsVal.clear();
+            ChangeColor(plbText, Qt::red);
+            bFormulasOK = false;
+        }
+
+        if (qsVal.isEmpty() == false)
+        {
+            qsVal += qsUnit;
+        }
+        plbVal->setText(qsVal);
     }
 
-    QLabel* plbVal;
-    QString qsUnit;
-    if (pobjSender == ui.lineEditLenFormula)
+    bOk->setEnabled(bFormulasOK);
+    if (bFormulasOK == false)
     {
-        plbVal = ui.labelLen;
-        qsUnit = " " + VDomDocument::UnitsToStr(qApp->patternUnit());
-    }
-    else if (pobjSender == ui.lineEditRotFormula)
-    {
-        plbVal = ui.labelRot;
-        QChar ch(0x00b0);
-        qsUnit = ch;
+        QIcon icon(":/icons/win.icon.theme/16x16/status/dialog-warning.png");
+        ui.tabWidget->setTabIcon(2, icon);
     }
     else
     {
-        // should not get here
-        return;
+        QIcon icon;
+        ui.tabWidget->setTabIcon(2, icon);
     }
-
-    if (qsVal.isEmpty() == false)
-    {
-        qsVal += qsUnit;
-    }
-    plbVal->setText(qsVal);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -945,6 +964,17 @@ void DialogDetail::EnableGrainlineRotation()
     ui.pushButtonLen->setEnabled(ui.checkBoxGrainline->isChecked());
     ui.pushButtonShowLen->setEnabled(ui.checkBoxGrainline->isChecked());
     ui.pushButtonShowRot->setEnabled(ui.checkBoxGrainline->isChecked());
+
+    if (ui.checkBoxGrainline->isChecked() == true)
+    {
+        UpdateValues();
+    }
+    else
+    {
+        ChangeColor(ui.labelEditLen, okColor);
+        ChangeColor(ui.labelEditRot, okColor);
+        bOk->setEnabled(true);
+    }
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -977,16 +1007,10 @@ void DialogDetail::EditFormula()
         QString qsFormula = dlg.GetFormula();
         qsFormula.replace("\n", " ");
         pleFormula->setPlainText(qsFormula);
-        SetValue(pleFormula);
+        UpdateValues();
     }
 }
 
-//---------------------------------------------------------------------------------------------------------------------
-void DialogDetail::UpdateValue()
-{
-    SetValue(sender());
-}
-
 //---------------------------------------------------------------------------------------------------------------------
 void DialogDetail::DeployRotation()
 {
diff --git a/src/libs/vtools/dialogs/tools/dialogdetail.h b/src/libs/vtools/dialogs/tools/dialogdetail.h
index b96263334..c40cb37a6 100644
--- a/src/libs/vtools/dialogs/tools/dialogdetail.h
+++ b/src/libs/vtools/dialogs/tools/dialogdetail.h
@@ -127,14 +127,12 @@ private:
 
     quint32          RowId(int i) const;
 
-    void             SetValue(QObject* pobjSender);
-
 private slots:
+    void             UpdateValues();
     void             SetAddMode();
     void             SetEditMode();
     void             EnableGrainlineRotation();
     void             EditFormula();
-    void             UpdateValue();
     void             DeployRotation();
     void             DeployLength();
 };
diff --git a/src/libs/vtools/dialogs/tools/dialogdetail.ui b/src/libs/vtools/dialogs/tools/dialogdetail.ui
index ef696c8e6..2e81a4f14 100644
--- a/src/libs/vtools/dialogs/tools/dialogdetail.ui
+++ b/src/libs/vtools/dialogs/tools/dialogdetail.ui
@@ -538,9 +538,9 @@
       <widget class="QWidget" name="horizontalLayoutWidget">
        <property name="geometry">
         <rect>
-         <x>20</x>
-         <y>20</y>
-         <width>351</width>
+         <x>10</x>
+         <y>10</y>
+         <width>541</width>
          <height>41</height>
         </rect>
        </property>
@@ -554,32 +554,68 @@
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="horizontalLayoutWidget_2">
+      <widget class="QWidget" name="layoutWidget_2">
        <property name="geometry">
         <rect>
-         <x>20</x>
-         <y>70</y>
-         <width>351</width>
+         <x>10</x>
+         <y>60</y>
+         <width>541</width>
          <height>41</height>
         </rect>
        </property>
-       <layout class="QHBoxLayout" name="horizontalLayout_5">
-        <item>
-         <widget class="QLabel" name="label_6">
-          <property name="font">
-           <font>
-            <pointsize>11</pointsize>
-            <weight>75</weight>
-            <bold>true</bold>
-           </font>
+       <layout class="QHBoxLayout" name="horizontalLayout_11">
+        <item alignment="Qt::AlignLeft">
+         <widget class="QLabel" name="labelEditRot">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="palette">
+           <palette>
+            <active>
+             <colorrole role="WindowText">
+              <brush brushstyle="SolidPattern">
+               <color alpha="255">
+                <red>255</red>
+                <green>0</green>
+                <blue>0</blue>
+               </color>
+              </brush>
+             </colorrole>
+            </active>
+            <inactive>
+             <colorrole role="WindowText">
+              <brush brushstyle="SolidPattern">
+               <color alpha="255">
+                <red>255</red>
+                <green>0</green>
+                <blue>0</blue>
+               </color>
+              </brush>
+             </colorrole>
+            </inactive>
+            <disabled>
+             <colorrole role="WindowText">
+              <brush brushstyle="SolidPattern">
+               <color alpha="255">
+                <red>159</red>
+                <green>158</green>
+                <blue>158</blue>
+               </color>
+              </brush>
+             </colorrole>
+            </disabled>
+           </palette>
           </property>
           <property name="text">
-           <string>Rotation</string>
+           <string>Rotation:</string>
           </property>
          </widget>
         </item>
         <item>
-         <spacer name="horizontalSpacer_2">
+         <spacer name="horizontalSpacer_4">
           <property name="orientation">
            <enum>Qt::Horizontal</enum>
           </property>
@@ -591,10 +627,13 @@
           </property>
          </spacer>
         </item>
-        <item>
-         <widget class="QPushButton" name="pushButtonRot">
+        <item alignment="Qt::AlignRight">
+         <widget class="QToolButton" name="pushButtonRot">
+          <property name="toolTip">
+           <string>Formula wizard</string>
+          </property>
           <property name="text">
-           <string/>
+           <string notr="true">...</string>
           </property>
           <property name="icon">
            <iconset resource="../../../vmisc/share/resources/icon.qrc">
@@ -608,8 +647,8 @@
           </property>
          </widget>
         </item>
-        <item>
-         <widget class="QLabel" name="label_10">
+        <item alignment="Qt::AlignRight">
+         <widget class="QLabel" name="labelEqual">
           <property name="text">
            <string/>
           </property>
@@ -618,79 +657,171 @@
           </property>
          </widget>
         </item>
-        <item>
+        <item alignment="Qt::AlignRight">
          <widget class="QLabel" name="labelRot">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
           <property name="minimumSize">
            <size>
             <width>87</width>
             <height>0</height>
            </size>
           </property>
+          <property name="baseSize">
+           <size>
+            <width>0</width>
+            <height>0</height>
+           </size>
+          </property>
+          <property name="toolTip">
+           <string>Value</string>
+          </property>
           <property name="text">
-           <string/>
+           <string notr="true">_</string>
           </property>
          </widget>
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="horizontalLayoutWidget_3">
+      <widget class="QWidget" name="layoutWidget_3">
        <property name="geometry">
         <rect>
-         <x>20</x>
-         <y>120</y>
-         <width>351</width>
+         <x>10</x>
+         <y>110</y>
+         <width>541</width>
          <height>41</height>
         </rect>
        </property>
-       <layout class="QHBoxLayout" name="horizontalLayout_7">
+       <layout class="QHBoxLayout" name="horizontalLayout_12">
         <item>
          <widget class="QPlainTextEdit" name="lineEditRotFormula">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
           <property name="maximumSize">
            <size>
             <width>16777215</width>
             <height>28</height>
            </size>
           </property>
+          <property name="toolTip">
+           <string>Calculation</string>
+          </property>
+          <property name="tabChangesFocus">
+           <bool>true</bool>
+          </property>
+          <property name="plainText">
+           <string notr="true"/>
+          </property>
          </widget>
         </item>
         <item>
          <widget class="QPushButton" name="pushButtonShowRot">
+          <property name="maximumSize">
+           <size>
+            <width>18</width>
+            <height>18</height>
+           </size>
+          </property>
+          <property name="sizeIncrement">
+           <size>
+            <width>0</width>
+            <height>0</height>
+           </size>
+          </property>
+          <property name="toolTip">
+           <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Show full calculation in message box&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+          </property>
           <property name="text">
-           <string/>
+           <string notr="true"/>
           </property>
           <property name="icon">
-           <iconset theme="go-down"/>
+           <iconset theme="go-down">
+            <normaloff/>
+           </iconset>
+          </property>
+          <property name="iconSize">
+           <size>
+            <width>16</width>
+            <height>16</height>
+           </size>
+          </property>
+          <property name="flat">
+           <bool>true</bool>
           </property>
          </widget>
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="horizontalLayoutWidget_4">
+      <widget class="QWidget" name="layoutWidget_4">
        <property name="geometry">
         <rect>
-         <x>20</x>
-         <y>180</y>
-         <width>351</width>
+         <x>10</x>
+         <y>160</y>
+         <width>541</width>
          <height>41</height>
         </rect>
        </property>
-       <layout class="QHBoxLayout" name="horizontalLayout_9">
-        <item>
-         <widget class="QLabel" name="label_11">
-          <property name="font">
-           <font>
-            <pointsize>11</pointsize>
-            <weight>75</weight>
-            <bold>true</bold>
-           </font>
+       <layout class="QHBoxLayout" name="horizontalLayout_13">
+        <item alignment="Qt::AlignLeft">
+         <widget class="QLabel" name="labelEditLen">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="palette">
+           <palette>
+            <active>
+             <colorrole role="WindowText">
+              <brush brushstyle="SolidPattern">
+               <color alpha="255">
+                <red>255</red>
+                <green>0</green>
+                <blue>0</blue>
+               </color>
+              </brush>
+             </colorrole>
+            </active>
+            <inactive>
+             <colorrole role="WindowText">
+              <brush brushstyle="SolidPattern">
+               <color alpha="255">
+                <red>255</red>
+                <green>0</green>
+                <blue>0</blue>
+               </color>
+              </brush>
+             </colorrole>
+            </inactive>
+            <disabled>
+             <colorrole role="WindowText">
+              <brush brushstyle="SolidPattern">
+               <color alpha="255">
+                <red>159</red>
+                <green>158</green>
+                <blue>158</blue>
+               </color>
+              </brush>
+             </colorrole>
+            </disabled>
+           </palette>
           </property>
           <property name="text">
-           <string>Length</string>
+           <string>Length:</string>
           </property>
          </widget>
         </item>
         <item>
-         <spacer name="horizontalSpacer_3">
+         <spacer name="horizontalSpacer_5">
           <property name="orientation">
            <enum>Qt::Horizontal</enum>
           </property>
@@ -702,10 +833,13 @@
           </property>
          </spacer>
         </item>
-        <item>
-         <widget class="QPushButton" name="pushButtonLen">
+        <item alignment="Qt::AlignRight">
+         <widget class="QToolButton" name="pushButtonLen">
+          <property name="toolTip">
+           <string>Formula wizard</string>
+          </property>
           <property name="text">
-           <string/>
+           <string notr="true">...</string>
           </property>
           <property name="icon">
            <iconset resource="../../../vmisc/share/resources/icon.qrc">
@@ -719,8 +853,8 @@
           </property>
          </widget>
         </item>
-        <item>
-         <widget class="QLabel" name="label_12">
+        <item alignment="Qt::AlignRight">
+         <widget class="QLabel" name="labelEqual_2">
           <property name="text">
            <string/>
           </property>
@@ -729,51 +863,105 @@
           </property>
          </widget>
         </item>
-        <item>
+        <item alignment="Qt::AlignRight">
          <widget class="QLabel" name="labelLen">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
           <property name="minimumSize">
            <size>
             <width>87</width>
             <height>0</height>
            </size>
           </property>
+          <property name="baseSize">
+           <size>
+            <width>0</width>
+            <height>0</height>
+           </size>
+          </property>
+          <property name="toolTip">
+           <string>Value</string>
+          </property>
           <property name="text">
-           <string/>
+           <string notr="true">_</string>
           </property>
          </widget>
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="horizontalLayoutWidget_5">
+      <widget class="QWidget" name="layoutWidget_5">
        <property name="geometry">
         <rect>
-         <x>20</x>
-         <y>230</y>
-         <width>351</width>
+         <x>10</x>
+         <y>210</y>
+         <width>541</width>
          <height>41</height>
         </rect>
        </property>
-       <layout class="QHBoxLayout" name="horizontalLayout_10">
+       <layout class="QHBoxLayout" name="horizontalLayout_14">
         <item>
          <widget class="QPlainTextEdit" name="lineEditLenFormula">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
           <property name="maximumSize">
            <size>
             <width>16777215</width>
             <height>28</height>
            </size>
           </property>
+          <property name="toolTip">
+           <string>Calculation</string>
+          </property>
+          <property name="tabChangesFocus">
+           <bool>true</bool>
+          </property>
+          <property name="plainText">
+           <string notr="true"/>
+          </property>
          </widget>
         </item>
         <item>
          <widget class="QPushButton" name="pushButtonShowLen">
+          <property name="maximumSize">
+           <size>
+            <width>18</width>
+            <height>18</height>
+           </size>
+          </property>
+          <property name="sizeIncrement">
+           <size>
+            <width>0</width>
+            <height>0</height>
+           </size>
+          </property>
+          <property name="toolTip">
+           <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Show full calculation in message box&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+          </property>
           <property name="text">
-           <string/>
+           <string notr="true"/>
           </property>
           <property name="icon">
            <iconset theme="go-down">
             <normaloff/>
            </iconset>
           </property>
+          <property name="iconSize">
+           <size>
+            <width>16</width>
+            <height>16</height>
+           </size>
+          </property>
+          <property name="flat">
+           <bool>true</bool>
+          </property>
          </widget>
         </item>
        </layout>