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 5920-01-451-2482
NSN 6620-00-343-8229
NSN 5990-01-482-5950
NSN 5895-01-384-3736
NSN 6240-01-650-5348
NSN 2925-01-590-3981
NSN 5910-01-633-9963
NSN 6685-01-127-7266
NSN 5910-00-530-6094
NSN 5935-01-533-5782
NSN 2925-00-048-7172
NSN 6145-01-645-4409