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 5895-01-542-1156
NSN 4140-01-643-3391
NSN 5960-01-325-2241
NSN 5835-01-381-2683
NSN 5998-01-557-4238
NSN 5935-01-427-3822
NSN 6220-01-307-3181
NSN 6620-01-611-7907
NSN 7035-00-834-2090
NSN 6620-00-526-8722
NSN 5925-00-436-3454
NSN 6650-00-195-7519