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 6220-01-398-1087
NSN 6150-01-605-1343
NSN 6685-01-197-7703
NSN 4140-01-012-2460
NSN 5920-01-645-8052
NSN 5910-01-377-4990
NSN 6650-00-248-4895
NSN 5985-00-273-9539
NSN 6685-00-705-6071
NSN 5960-00-597-2680
NSN 5835-01-160-3045
NSN 6645-01-449-8100