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 5920-00-276-8657
NSN 4140-01-529-6811
NSN 5920-00-021-1972
NSN 5975-01-207-5534
NSN 5855-00-797-8217
NSN 6650-01-005-0714
NSN 6645-01-459-5862
NSN 5895-01-420-7802
NSN 6105-00-399-1352
NSN 5915-01-116-1897
NSN 5945-01-546-9180
NSN 5915-00-368-4564