A-A-50212 Revision A, May 18, 1988
PARALLEL RULERS, FOLDING TYPE
Includes all amendments and changes through Validation Notice 2, September 1, 2006
The General Services Administration has authorized the use of this commercial item description in preference to Federal Specification GG-P-118.
This description covers stepping or folding parallel rulers used in general drafting and navigation to draw and lay out parallel lines.