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 5910-00-721-2274
NSN 6110-00-689-1632
NSN 5998-01-160-8760
NSN 5990-01-185-5346
NSN 4140-01-634-0330
NSN 5910-01-056-3655
NSN 6130-01-634-0603
NSN 5945-01-430-4992
NSN 6130-01-042-1147
NSN 5930-00-840-5510
NSN 5990-01-411-5930
NSN 5920-01-273-8782