Part Modeling > Modifying the Part > Editing Dimensions > Using the Menu Manager to Edit > To Switch Dimension Arrowheads
  
To Switch Dimension Arrowheads
If the application in which you are working requires that you use the Menu Manager, follow the procedure below, otherwise follow the procedure To Edit Dimension Properties, Text, or Text Style.
1. Click PART > Modify > DimCosmetics. The DIM COSMETIC menu appears.
2. Click Flip Arrows. The display of arrowheads toggles between inside and outside the extension lines.