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 5965-01-570-4711
NSN 5920-01-045-1484
NSN 5910-01-231-9628
NSN 5975-01-059-2705
NSN 5998-01-020-6254
NSN 6220-01-354-7598
NSN 6650-01-541-4357
NSN 6650-01-419-0286
NSN 6110-01-261-0066
NSN 6610-01-422-2376
NSN 5935-01-417-5998
NSN 5915-00-683-8248