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 6135-01-161-3914
NSN 5910-00-130-1651
NSN 6685-01-654-7507
NSN 5960-01-416-6187
NSN 6610-00-762-8290
NSN 5990-01-034-4532
NSN 6145-01-651-8880
NSN 4140-01-569-6113
NSN 5999-01-461-8280
NSN 6685-00-153-0266
NSN 6150-01-518-7355
NSN 6145-01-043-3052