Introduction to GD&T provides a basic introduction to the symbols and terminology of geometric dimensioning and tolerancing, or GD&T. GD&T is an international design standard that uses 14 standard ...

Geometric Dimensioning and Tolerancing (GD&T) has been around since the 1940s, yet it is unappreciated as a way of finding bad designs before parts get made. • Tolerances are a vital part of ...