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 5950-00-078-1779
NSN 6610-01-170-2905
NSN 6130-01-167-8911
NSN 6645-01-199-7553
NSN 6145-01-014-8350
NSN 5855-00-797-8217
NSN 2925-00-884-8469
NSN 6135-01-426-8282
NSN 4140-00-975-5070
NSN 5920-01-455-0666
NSN 5925-01-025-9612
NSN 6650-01-500-1756