diff --git a/src/Mod/TechDraw/Gui/QGIViewDimension.cpp b/src/Mod/TechDraw/Gui/QGIViewDimension.cpp
index 4cfd663b5..6f0e10f29 100644
--- a/src/Mod/TechDraw/Gui/QGIViewDimension.cpp
+++ b/src/Mod/TechDraw/Gui/QGIViewDimension.cpp
@@ -598,11 +598,11 @@ void QGIViewDimension::draw()
             double tolerance = 15.0; //deg
 
             tolerance *= M_PI / 180;
-            if( (angle > -tolerance && angle < tolerance) ||           //angle = 0 or 180  (+/- 15)
-                (angle > (M_PI - tolerance) || angle < (-M_PI + tolerance)) ) {
+            if( (angle > -tolerance && angle < tolerance) ||                                       //angle = 0 or 180  (+/- 15)
+                (angle > (M_PI - tolerance) || angle < (-M_PI + tolerance)) ) {                    //dim line is Horizontal
                   posMode = HorizontalSnap;
             } else if( (angle < ( M_PI / 2. + tolerance) && angle > ( M_PI / 2. - tolerance)) ||   //angle = 90 or 270 (+/- 15)
-                       (angle < (-M_PI / 2. + tolerance) && angle > (-M_PI / 2. - tolerance)) ) {
+                       (angle < (-M_PI / 2. + tolerance) && angle > (-M_PI / 2. - tolerance)) ) {  //dim line is Vertical
                 posMode = VerticalSnap;
             }
 
@@ -672,7 +672,7 @@ void QGIViewDimension::draw()
                 path.moveTo(dLine2Tail.x, dLine2Tail.y);
                 path.lineTo(arrow2Tip.x, arrow2Tip.y);
 
-                datumLabel->setRotation(90.);
+                datumLabel->setRotation(-90.);
 
             } else {                                                   //outer placement, NoSnap
                 float tip = (margin + w / 2);                          // spacer + 0.5*lblText.width()  tip is actually tail?