Fig Spherical Feature Located By Positional Tolerancing

6 Tolerances of Form, Profile, Orientation, and Runout

6.1 GENERAL

This Section establishes the principles and methods of dimensioning and tolerancir.g to control form, profile, orientation, and runout of various geometrical shapes and free state variations.

6.2 FORM AND ORIENTATION CONTROL

Form tolerances control straightness, flatness, circularity, and cylindricity. Orientation tolerances control angularity, parallelism, and perpendicularity. A profile tolerance may control form, orientation, size, and location depending on how it is applied. Since, to a certain degree, the limits of size control form and parallelism, and tolerances of location control orientation, the extent of these controls should be considered before specifying form and orientation tolerances. See para. 2.7 and Figs. 2-6 and 5-6.

6.3 SPECIFYING FORM AND ORIENTATION

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