diff --git a/src/Mod/Sketcher/App/Constraint.h b/src/Mod/Sketcher/App/Constraint.h
index 1714130e52..0fc9c57fa6 100644
--- a/src/Mod/Sketcher/App/Constraint.h
+++ b/src/Mod/Sketcher/App/Constraint.h
@@ -95,6 +95,9 @@ public:
     virtual void Restore(Base::XMLReader &/*reader*/);
 
     virtual PyObject *getPyObject(void);
+    
+    // Return presentation string. Will include units if HideUnits option is NOT selected. May still return units if rendered units are not the base units (i.e. a small dimension returned in mm instead of m). Only length untis may be hidden.
+    QString getPresentationString() const;
 
     Base::Quantity getPresentationValue() const;
     inline void setValue(double newValue) {