diff --git a/src/Mod/TechDraw/Gui/DimensionValidators.cpp b/src/Mod/TechDraw/Gui/DimensionValidators.cpp
index d9a0e5fc30..66f9e661f1 100644
--- a/src/Mod/TechDraw/Gui/DimensionValidators.cpp
+++ b/src/Mod/TechDraw/Gui/DimensionValidators.cpp
@@ -386,14 +386,7 @@ DimensionGeometry TechDraw::isValidSingleEdge(const ReferenceEntry& ref)
         if (gen1->points.size() < 2) {
             return DimensionGeometry::isInvalid;
         }
-        Base::Vector3d line = gen1->points.at(1) - gen1->points.at(0);
-        if (fabs(line.y) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isVertical;
-        }
-        if (fabs(line.x) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isHorizontal;
-        }
-        return DimensionGeometry::isDiagonal;
+        return lineOrientation(gen1->points.at(0), gen1->points.at(1));
     }
 
     if (geom->getGeomType() == GeomType::CIRCLE || geom->getGeomType() == GeomType::ARCOFCIRCLE) {
@@ -437,21 +430,7 @@ DimensionGeometry TechDraw::isValidSingleEdge3d(DrawViewPart* dvp, const Referen
         point0 = dvp->projectPoint(point0);
         auto point1 = Base::convertTo<Base::Vector3d>(BRep_Tool::Pnt(TopExp::LastVertex(occEdge)));
         point1 = dvp->projectPoint(point1);
-        Base::Vector3d line = point1 - point0;
-        if (fabs(line.y) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isVertical;
-        }
-
-        if (fabs(line.x) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isHorizontal;
-        }
-
-        // we don't support Z direction dimensions
-        //        else if (fabs(line.z) < std::numeric_limits<float>::epsilon()) {
-        //            return TechDraw::isZLimited;
-        //        }
-
-        return DimensionGeometry::isDiagonal;
+        return lineOrientation(point0, point1);
     }
 
     if (adapt.GetType() == GeomAbs_Circle) {
@@ -461,7 +440,8 @@ DimensionGeometry TechDraw::isValidSingleEdge3d(DrawViewPart* dvp, const Referen
     if (adapt.GetType() == GeomAbs_Ellipse) {
         return DimensionGeometry::isEllipse;
     }
-     else if (adapt.GetType() == GeomAbs_BSplineCurve) {
+
+    if (adapt.GetType() == GeomAbs_BSplineCurve) {
         if (GeometryUtils::isCircle(occEdge)) {
             return DimensionGeometry::isBSplineCircle;
         }
@@ -649,16 +629,7 @@ DimensionGeometry TechDraw::isValidVertexes(const ReferenceVector& refs)
         //2 vertices can only make a distance dimension
         TechDraw::VertexPtr v0 = dvp->getVertex(refs.at(0).getSubName());
         TechDraw::VertexPtr v1 = dvp->getVertex(refs.at(1).getSubName());
-        Base::Vector3d line = v1->point() - v0->point();
-        if (fabs(line.y) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isHorizontal;
-        }
-
-        if (fabs(line.x) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isVertical;
-        }
-        return DimensionGeometry::isDiagonal;
-
+        return lineOrientation(v0->point(), v1->point());
     } else if (refs.size() == 3) {
         //three vertices make an angle dimension
         return DimensionGeometry::isAngle3Pt;
@@ -689,18 +660,10 @@ DimensionGeometry TechDraw::isValidVertexes3d(DrawViewPart* dvp, const Reference
         point0 = dvp->projectPoint(point0);
         auto point1 = Base::convertTo<Base::Vector3d>(BRep_Tool::Pnt(TopoDS::Vertex(geometry1)));
         point1 = dvp->projectPoint(point1);
-        Base::Vector3d line = point1 - point0;
-        if (fabs(line.y) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isVertical;
-        }
-        if (fabs(line.x) < std::numeric_limits<float>::epsilon()) {
-            return DimensionGeometry::isHorizontal;
-            //        } else if(fabs(line.z) < std::numeric_limits<float>::epsilon()) {
-            //            return isZLimited;
-        }
-        return DimensionGeometry::isDiagonal;
+        return lineOrientation(point0, point1);
+    }
 
-    } else if (refs.size() == 3) {
+    if (refs.size() == 3) {
         //three vertices make an angle dimension
         //we could check here that all the geometries are Vertex
         return DimensionGeometry::isAngle3Pt;
@@ -802,3 +765,24 @@ bool  TechDraw::refsMatchToken(const ReferenceVector& refs, const std::string& m
     }
     return true;
 }
+
+
+DimensionGeometry TechDraw::lineOrientation(const Base::Vector3d& point0,
+                                            const Base::Vector3d& point1)
+{
+    Base::Vector3d line = point1 - point0;
+    if (fabs(line.y) < std::numeric_limits<float>::epsilon()) {
+        return DimensionGeometry::isHorizontal;
+    }
+
+    if (fabs(line.x) < std::numeric_limits<float>::epsilon()) {
+        return DimensionGeometry::isVertical;
+    }
+
+    // we don't support Z direction dimensions
+    //        else if (fabs(line.z) < std::numeric_limits<float>::epsilon()) {
+    //            return TechDraw::isZLimited;
+    //        }
+
+    return DimensionGeometry::isDiagonal;
+}
diff --git a/src/Mod/TechDraw/Gui/DimensionValidators.h b/src/Mod/TechDraw/Gui/DimensionValidators.h
index 5d065c3438..7b98fa1ee0 100644
--- a/src/Mod/TechDraw/Gui/DimensionValidators.h
+++ b/src/Mod/TechDraw/Gui/DimensionValidators.h
@@ -101,6 +101,10 @@ long int mapGeometryTypeToDimType(long int dimType, DimensionGeometry geometry2d
 
 bool  refsMatchToken(const ReferenceVector& refs, const std::string& matchToken);
 
+DimensionGeometry lineOrientation(const Base::Vector3d& point0,
+                                  const Base::Vector3d& point1);
+
+
 }
 #endif //TECHDRAW_DIMENSIONVALIDATORS_H