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 6650-01-090-0239
NSN 6320-01-072-2073
NSN 6650-01-643-5908
NSN 5960-01-419-2167
NSN 5999-00-872-1352
NSN 5920-01-256-0287
NSN 6145-01-452-5841
NSN 6145-01-594-2389
NSN 5990-01-411-7706
NSN 5930-01-619-0942
NSN 2925-00-833-9466
NSN 6240-01-143-0397