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 5975-01-415-2357
NSN 5990-00-905-6472
NSN 6110-01-445-2840
NSN 6105-01-428-2994
NSN 6240-01-357-2289
NSN 6650-01-386-5787
NSN 5855-00-337-3679
NSN 6320-01-532-6746
NSN 5930-00-554-1064
NSN 5950-00-959-4508
NSN 5950-01-186-0764
NSN 6110-00-317-8063