ANGULARITY
,
PARALLELISM
AND
PERPENDICULARITY
The angularity (including parallelism and perpendicularity) tolerance is the
total deviation between two planes within which the entire surface so
toleranced must lie. The planes of deviation (tolerance zone) forms the
basic angle to the datum plane. Tolerances are for draft free surfaces (see
Draft standard). To establish planes see Flatness standard.
ANGULARITY
Angularity refers to the angular departure from the designed relationship
between the elements of a casting. The angularity of cored holes may vary as
a result of distortion and wear of core boxes. (Cored holes must conform to
the diameter-to-depth ratios of the Holes and Pockets standard.)
Up to 3 in. depth .030
Additonal depth over 3 in. .007 in./in.