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 6240-01-026-1376
NSN 6650-00-784-9222
NSN 4140-00-758-7686
NSN 5950-01-198-0261
NSN 5990-01-311-2348
NSN 5855-01-006-1827
NSN 5910-01-212-3090
NSN 5905-01-642-4201
NSN 5985-01-602-5159
NSN 6135-01-502-8771
NSN 6135-01-511-1975
NSN 5990-01-240-7288