It is often necessary to control a pattern of features tighter within the pattern and looser to the datum reference frame. This can be done using composite or single-segment position tolerances. In composite tolerancing there will be only one position symbol but multiple tolerances. Any datum references repeated in the lower segment of a …
Composite versus Two Single Segments [5.4] (#227)
(In accordance with Y14.5M-1994 standard)
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