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 5950-01-192-0000
NSN 7035-01-589-2629
NSN 6150-01-379-9634
NSN 5910-01-432-2214
NSN 4140-00-413-0877
NSN 6150-01-613-3751
NSN 5835-01-163-4215
NSN 6220-01-044-5552
NSN 5895-01-576-8965
NSN 6320-00-994-0179
NSN 5945-01-038-4595
NSN 6610-01-554-1854