parallelism
Definition The tolerance zone is limited in the measuring plane by two straight lines a distance t apart and parallel to the datum.
Definition The tolerance zone is limited in the measuring plane by two straight lines a distance t apart and parallel to the datum.
Example
Any generating line of the toleranced
surface shall be contained between
two straight lines 0.1 apart and parallel
to the datum surface A.
Note
For further parallelism tolerances, see ISO 1101.