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 5930-00-841-8546
NSN 6145-00-201-1330
NSN 5905-01-371-0872
NSN 5999-01-495-8176
NSN 5935-01-473-8487
NSN 6220-00-891-8786
NSN 5855-01-111-3962
NSN 6645-00-256-4072
NSN 6610-01-005-4636
NSN 6150-00-927-1392
NSN 6240-01-264-6637
NSN 6220-01-426-8824