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 5930-01-246-3721
NSN 5998-01-652-3816
NSN 5990-01-065-0492
NSN 6620-00-526-0387
NSN 4140-01-234-5114
NSN 5915-01-367-4284
NSN 5950-01-492-5919
NSN 5915-01-094-0400
NSN 5950-01-294-2295
NSN 6240-01-243-6884
NSN 5999-01-437-4051
NSN 5950-01-104-5002