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 6650-01-171-6965
NSN 6650-00-138-8605
NSN 5855-01-649-7398
NSN 5985-01-380-8094
NSN 2925-00-265-7539
NSN 5965-01-558-5380
NSN 6240-01-073-6471
NSN 5910-01-392-5935
NSN 6110-01-442-7378
NSN 6240-01-576-9120
NSN 5990-00-005-5215
NSN 4140-01-469-5778