GD & T
Geometric Dimensioning and Tolerance (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models that explicitly describes nominal geometry and its allowable variation.
1. To awareness about different types of tolerances
2. To get knowledge about symbolic representation of tolerances.
3. It provides capability to study of industrial drawings with given tolerances.