A-A-843 Revision E, June 17, 1993
T-SQUARE: (WOOD, WOOD AND PLASTIC, STEEL AND PLASTIC)
Includes all amendments and changes through Cancellation Notice 1, September 30, 1999
Additional Comments: CNCL NO S/S
The General Services Administration has authorized the use of this commercial item description as a replacement for Federal Specification GG-T-711F.
This description covers fixed head T-squares for general drafting practice, type, size and class as specified:
Type I - Fixed head. Type II - Double head. (fixed and adjustable). Class B - Opaque blade. With transparent edges, the blade shall be one continuous piece of hardwood or opaque plastic with continuous transparent working edges between 6 and 12 millimeters wide. Class C - Transparent blade. One continuous piece of plastic with a flat black metal slat permanently bonded to both surfaces. Available in 75 centimeter lengths or greater.