Tolerancing Asme Y14.5m-1994: Dimensioning And

Dimensioning and tolerancing must be fully specified so there is a complete understanding of every feature's requirements.

Dimensions and tolerances typically apply when the part is in its "free state" and not being forced or bolted down. Key Components of GD&T in Y14.5M-1994 Dimensioning and Tolerancing ASME Y14.5M-1994

Controls the physical placement of features relative to each other or a datum. Profile of a Surface, Profile of a Line Controls the boundary of a feature's outline. Runout Circular Runout, Total Runout Controls variation in a surface when rotated about an axis. Building Blocks of the Language Dimensioning and tolerancing must be fully specified so

The standard relies on several fundamental rules that guide how dimensions and tolerances are applied: mathematically perfect points

Imaginary, mathematically perfect points, axes, or planes used as reference points for measurements.