ASME Y14.5 : Dimensioning and Tolerancing

The total amount a dimension or feature is permitted to vary. The tolerance is the difference between the maximum and minimum limits.

See Also:

Dimension, Feature, Directly Toleranced Dimension, Equal Bilateral Tolerance, Geometric Dimensions & Tolerances, Geometric Tolerance

Alternate Definitions:

DAU - A measure of the accuracy of the dimensions of a part.