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 5920-00-175-1171
NSN 5895-01-237-1619
NSN 5910-00-883-7697
NSN 5960-01-503-0362
NSN 5855-01-419-9429
NSN 6650-00-087-1569
NSN 2925-00-909-2596
NSN 6105-01-024-8077
NSN 6105-00-664-1292
NSN 2925-01-627-6568
NSN 5835-00-912-5656
NSN 5935-01-450-3717