GD&T

Geometric Dimensioning and Tolerancing (GD&T) is a system used in engineering and manufacturing to communicate how parts should be made and how they fit together. It defines the allowable variations in size and shape of a component, ensuring it meets design specifications. GD&T uses specific symbols and annotations on technical drawings to convey this information clearly, helping to maintain quality and consistency in production. By specifying tolerances, GD&T ensures that parts can be manufactured reliably and will function correctly when assembled, regardless of slight variations in production processes.