Angularity is the condition of a feature which is at
any any angle other than parallel or perpendicular to a datum.
The tolerance zone will be a width between parallel planes
or line. A cylindrical tolerance zone is not applicable. The
dimension defining the angle between the datum and controlled
feature must be basic and must be placed between the feature
When the angularity of a surface is controlled relative to
a datum plane, the tolerance zone is confined be two planes
that are at a specified angle to the datum plane.