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 5855-00-117-0857
NSN 6145-01-451-4599
NSN 4140-00-442-6373
NSN 6650-00-575-7487
NSN 6320-01-280-5091
NSN 6320-01-512-2031
NSN 5945-01-017-1870
NSN 5895-01-509-1530
NSN 6130-01-263-5724
NSN 5950-01-143-3973
NSN 2925-01-327-0206
NSN 5999-01-265-2500