GD&T is the international language used on engineering drawings to accurately describe the size, form, orientation, and location of part features. Additionally it is also a design dimensioning philosophy that encourages designers to define a part based on how it functions in the final product or assembly. GD&T is an exact language that enables design engineers to "say what they mean" on a drawing. Process engineers and manufacturing use the language to interpret the design intent and to determine the best manufacturing approach. Quality control and inspection use the GD&T language to determine proper set-up and part verification.