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 5945-01-158-4057
NSN 5935-01-184-5160
NSN 5965-01-633-8849
NSN 6320-01-056-1164
NSN 6150-01-657-0018
NSN 4140-01-522-5536
NSN 5920-01-467-4079
NSN 5975-00-549-9431
NSN 5998-01-652-9801
NSN 4140-00-544-1517
NSN 7035-00-200-5162
NSN 5975-01-170-3480