On the General tab in the Compare Features: Options dialog box, you can change the Compare Features unit options.
To specify linear units:
From the Linear units list, select the type of units to use. If you select Microinches, Mils, Inches, or Feet & Inches as the unit of measure, click Decimal or Fractions.
If you selected Decimal, specify the number of Decimal places (0 to 8).
If you selected Fractions, specify the Denominator. (Only dimensions that are evenly divisible by this denominator are displayed as fractions.) You can also select the Round to nearest fraction check box.
To specify angular units:
In the Angular units list, select Degrees, Deg/Min, Deg/Min/Sec, or Radians.
If you selected Degrees or Radians, specify the number of Decimal places.
NOTE: Changing the linear or angular units does not change the units of the solid model. These units are for display of Compare Features results only.