ISO 10303-214:2010(E)
A Straightness_tolerance is a constraint on the deviation that a curve or any curve on a surface may have from being a straight line. It defines a tolerance zone within which the curve must lie.
A Straightness_tolerance is a type of Geometric_tolerance.
The data associated with a Straightness_tolerance are the following:
affected_plane
The affected_plane specifies the plane in which the tolerance applies.
This attribute covers information that is given on drawings implicitly by the drawing plane. If the affected_plane is not specified, the tolerance applies in all directions (on drawings indicated by the diameter symbol) .
See straightness_tolerance to reference_plane for the application assertion.
The affected_plane need not be specified for a particular Straightness_tolerance.
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