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 5999-01-513-6448
NSN 5925-00-045-5295
NSN 4140-00-225-8586
NSN 6150-01-020-8983
NSN 6110-01-199-0172
NSN 5990-01-395-4194
NSN 6650-01-461-4807
NSN 6240-01-223-2453
NSN 5935-01-094-7409
NSN 7035-01-211-5636
NSN 2925-00-516-8841
NSN 5985-01-270-0667