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 5910-01-150-5057
NSN 6220-00-848-4170
NSN 5950-00-201-5267
NSN 5855-01-360-6650
NSN 5935-01-446-1552
NSN 5935-01-252-1455
NSN 5905-01-290-1903
NSN 5999-00-337-0849
NSN 5999-00-135-9638
NSN 6320-01-521-1764
NSN 5835-00-546-4898
NSN 6650-01-033-6667