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 5998-00-725-8321
NSN 6685-01-453-6306
NSN 5855-01-337-0245
NSN 5999-00-833-8143
NSN 4140-01-181-8747
NSN 5990-01-544-4360
NSN 5920-00-944-3540
NSN 6620-00-999-2425
NSN 6135-01-487-6275
NSN 5960-01-189-1644
NSN 5945-00-528-8352
NSN 2925-01-357-2512