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 4140-01-429-9060
NSN 6620-01-494-9858
NSN 5920-01-496-1996
NSN 6135-01-476-4697
NSN 6105-00-925-2226
NSN 6135-01-180-9611
NSN 5855-01-013-6864
NSN 6105-00-924-1476
NSN 6650-01-234-6124
NSN 5920-01-286-2597
NSN 6610-00-413-5016
NSN 5920-00-504-8634