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 5975-00-665-3644
NSN 6650-01-541-4357
NSN 6105-00-587-1969
NSN 5999-01-106-3451
NSN 5855-01-325-3380
NSN 6645-00-757-5396
NSN 5920-01-327-9447
NSN 6105-00-057-6771
NSN 6130-01-204-5137
NSN 2925-00-652-7383
NSN 6110-01-515-9937
NSN 6135-01-432-1265