Under Compare Options, select from:

• Check documents before Compare Geometry. Checks the geometry of both documents before doing the comparison. When selected, SolidWorks Utilities runs the SolidWorks Check function to find invalid surfaces and edges.

  If either part does not pass the check process, a dialog box appears that asks for confirmation to proceed with the comparison.

You should repair the invalid geometry before proceeding with the comparison.

• Perform face comparison. Compares the geometry of corresponding faces in the two parts.

• Perform volume comparison. Computes the volume differences and common volume of the two parts or assemblies. If Perform volume comparison is not selected, assembly documents cannot be compared.

If the parts contain a large number of spline surfaces, computation of volume differences may fail or take a long time.

Select an item in Linear units. If you select Microinches, Mils, Inches, or Feet & Inches as your unit of measure, click Decimal or Fractions.

• If you selected Decimal, set the number of Decimal places (0 to 8).

• If you selected Fractions, set the Denominator. (Only dimensions that are evenly divisible by this denominator are displayed as fractions.) You can also select Round to nearest fraction.

Select an item in Angular units.

If you selected Degrees or Radians, set the number of Decimal places.

Changing the linear or angular units does not change the units of the solid model. These units are for display of Compare Geometry results only.