Knowledge of the proper use of Geometric Dimensioning and Tolerancing (GD&T) is a must-have for any dimensional inspector that may encounter the use of GD&T symbols. But how much does an inspector really need to know?
Two of the most commonly used geometric symbols are profiles and true position. Yet the application of profile and true position are of the most complex of the GD&T methods. Therefore, a mechanical inspector must have a firm grasp of the application of GD&T – both in the product design as well as how to verify the finished part in the lab.
A GD&T fundamentals course will be effective for most entry-level to intermediate dimensional inspection positions. But for those who consult with design engineers or customers regarding GD&T print definitions, a study of advanced concepts is appropriate.
The QC Group tests inspector and engineering applicants to establish their level of understanding in blueprint reading and geometric dimensioning and tolerancing. This step assures that the person is properly fit to that part of the assignment – eliminating the guess-work for the client.