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 5920-01-503-1245
NSN 6320-00-546-9249
NSN 6240-01-052-0485
NSN 6650-00-480-9135
NSN 6240-00-067-7526
NSN 5999-01-195-3139
NSN 5855-01-557-6277
NSN 5935-00-822-7612
NSN 5990-01-039-2016
NSN 5925-01-538-0259
NSN 5905-01-355-1418
NSN 6145-01-506-3668