Heat treated
A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 6240-01-293-4819
NSN 6240-01-027-7533
NSN 4140-00-223-5197
NSN 5835-01-143-9143
NSN 5910-00-269-4755
NSN 5925-01-371-2876
NSN 4140-01-602-5458
NSN 5975-00-927-9538
NSN 5915-00-446-9136
NSN 4140-01-357-7867
NSN 5835-00-065-6757
NSN 5910-01-163-1468