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 4140-01-027-7516
NSN 5965-01-302-2719
NSN 5855-01-445-6551
NSN 5975-01-401-5355
NSN 6620-00-939-0462
NSN 5998-01-462-6396
NSN 2925-01-123-2235
NSN 6645-01-467-9983
NSN 5975-01-041-2046
NSN 6620-00-079-4615
NSN 6145-01-540-3558
NSN 5945-01-273-6698