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 5999-01-383-8427
NSN 6145-01-273-9150
NSN 6220-01-591-4337
NSN 5935-00-842-6510
NSN 6130-00-108-6115
NSN 5998-01-124-3593
NSN 5965-01-495-1170
NSN 5915-00-314-0832
NSN 6685-01-319-8195
NSN 5998-01-415-4237
NSN 5975-00-262-0896
NSN 5975-01-435-4604