CMM provides verification of dimensions and geometric tolerances. Dimension tolerance verification is the practice of checking whether a reference entity is positioned or sized according to dimensional tolerances. Geometric tolerance (gtol) verification is the practice of checking whether a reference entity possesses certain geometric characteristics within allowed tolerances.

Each verification step is a feature that captures the intent of verifying one dimension or geometric tolerance. You begin creating a Verify step by selecting the dimension or geometric tolerance on the reference model, or in a drawing of the reference model. The system then extracts the properties of the dimension or gtol in order to determine what other elements need to be supplied to the feature.