Dimension Unit Settings
The Units settings of the Dimension Settings dialog box enable you to set the units of all dimension text or of specific dimension text components. These settings will be applied to all subsequent dimensioning that you assign using the dimension buttons in the Annotate group on the Drafting and Modify tabs.
To select the dimension text component or components to which you want to apply the unit settings:
1. Click Units in the Dimension Settings dialog box.
2. In the Units area, select a dimension text component in the Set box from the following:
◦ Select Upper to set the units for the main dimension text.
This is the default setting.
◦ Select Lower to set the units for the lower dimension text (if applicable).