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 4140-01-293-1332
NSN 6620-01-289-8486
NSN 6135-00-078-9931
NSN 5925-01-366-7892
NSN 5985-01-054-2917
NSN 5855-00-925-7887
NSN 6110-00-087-0227
NSN 6220-00-884-8743
NSN 5925-00-910-7485
NSN 2925-01-381-5307
NSN 5920-00-270-5179
NSN 6135-01-544-8463