Graphical simulation animation of a CAD system can be used to inspect the tolerance and interference of matching components of a product. It will be possible to precisely define these values and produce better product.

Flexibility and Economy: CAD efficiently provides a document at each design step and offers great flexibility and economy in the management of design data which include all important design information and product geometries. The use of CAD make s it possible both to produce good working drawings and the preserve clearly the results of some of the computations involved in the design process. Also it is easier to edit drawings and correct mistakes on the computer than it would be do so manually. Further CAD assists in coordinating among group to share the design results and data.