The AutoCAD Mechanical toolset workflow for creating custom dimensions styles is different from the workflow typically used in AutoCAD.
- At the Command prompt, enter AMOPTIONS.
- In the Options dialog box, click the AM:Standards tab.
- In the Standard Elements list, double-click Dimension. The Dimension Settings dialog box appears.
- In the Base Dimension Style edit box, enter a name for the custom dimension style, and then click Edit.
- In The Edit Dimension Styles dialog box, select the type of dimension to change, and then choose Modify.
- In the displayed dialog box, make your necessary entries and click OK until all dialog boxes close.