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 5920-00-451-0463
NSN 5895-01-444-4641
NSN 6220-01-561-9772
NSN 5945-01-582-0332
NSN 6105-01-323-4695
NSN 5935-01-214-3578
NSN 5999-01-489-6139
NSN 5990-01-582-1977
NSN 6685-01-422-1506
NSN 5835-01-227-2318
NSN 5915-00-862-1506
NSN 6145-01-200-7075