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 5920-01-645-9461
NSN 2925-01-288-2091
NSN 6650-01-587-5867
NSN 5930-00-666-2971
NSN 5935-00-170-8480
NSN 6645-01-158-9967
NSN 5935-01-461-6728
NSN 5965-00-035-4556
NSN 6610-00-277-7206
NSN 6110-01-221-7680
NSN 6135-00-073-8939
NSN 6150-01-549-3721