diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index a28212530..86b8877b9 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -2760,18 +2760,33 @@ void TMainWindow::SetDecimals()
     {
         case Unit::Cm:
             ui->doubleSpinBoxBaseValue->setDecimals(1);
+            ui->doubleSpinBoxBaseValue->setSingleStep(0.1);
+
             ui->doubleSpinBoxInSizes->setDecimals(1);
+            ui->doubleSpinBoxInSizes->setSingleStep(0.1);
+
             ui->doubleSpinBoxInHeights->setDecimals(1);
+            ui->doubleSpinBoxInHeights->setSingleStep(0.1);
             break;
         case Unit::Mm:
             ui->doubleSpinBoxBaseValue->setDecimals(0);
+            ui->doubleSpinBoxBaseValue->setSingleStep(1);
+
             ui->doubleSpinBoxInSizes->setDecimals(0);
+            ui->doubleSpinBoxInSizes->setSingleStep(1);
+
             ui->doubleSpinBoxInHeights->setDecimals(0);
+            ui->doubleSpinBoxInHeights->setSingleStep(1);
             break;
         case Unit::Inch:
             ui->doubleSpinBoxBaseValue->setDecimals(5);
+            ui->doubleSpinBoxBaseValue->setSingleStep(0.00001);
+
             ui->doubleSpinBoxInSizes->setDecimals(5);
+            ui->doubleSpinBoxInSizes->setSingleStep(0.00001);
+
             ui->doubleSpinBoxInHeights->setDecimals(5);
+            ui->doubleSpinBoxInHeights->setSingleStep(0.00001);
             break;
         default:
             break;
diff --git a/src/app/tape/tmainwindow.ui b/src/app/tape/tmainwindow.ui
index acf79fbc1..297a85198 100644
--- a/src/app/tape/tmainwindow.ui
+++ b/src/app/tape/tmainwindow.ui
@@ -47,7 +47,7 @@
        <string/>
       </property>
       <property name="currentIndex">
-       <number>1</number>
+       <number>0</number>
       </property>
       <widget class="QWidget" name="tabMeasurements">
        <attribute name="icon">