AutoCAD 2008 User's Guide > Annotate Drawings > Dimensions and Tolerances > Use Dimension Styles > Control Dimension Geometry > Customize Arrowheads > 
Customize Arrowheads
Concept Procedure Quick Reference
 
 
 

To use your own arrowhead symbol

  1. Click Dimension menu Dimension Style.At the Command prompt, enter dimstyle.
  2. In the Dimension Style Manager, select the style you want to change. Click Modify.
  3. In the Dimension Style Manager, Symbols and Arrows tab, under Arrowheads, select User Arrow from the First arrowhead list.
  4. In the Select Custom Arrow Block dialog box, enter the name of your block. Click OK.
  5. To choose a different custom arrowhead for the second arrowhead, repeat steps 3 and 4, choosing User Arrow from the Second arrowhead list (optional).
  6. Click OK.
  7. Click Close to exit the Dimension Style Manager.
 Toolbar: Dimension or Styles 
 Command entry: DIMSTYLE