To create dimensions for a chamfer, use the AMCHAM2D command and select the dimension option. The chamfer is dimensioned using the representation currently in force. Use the setup option of the AMCHAM2D command to change the chamfer representation. Chamfers dimensioned during this command session follow this setting and thereafter resets to the default chamfer dimension representation. Change the default chamfer dimension representation from the Dimension Settings dialog box.
Alternatively, use the AMCHAM2D_DIM command, which opens the dimension option of the AMCHAM2D command.