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 5990-01-168-3257
NSN 6145-01-371-2404
NSN 6110-01-424-4074
NSN 5905-01-091-5940
NSN 5935-01-494-7638
NSN 5985-00-956-2402
NSN 5950-00-150-4772
NSN 6150-01-485-0094
NSN 5835-00-378-1429
NSN 6110-00-248-8975
NSN 5960-00-145-9361
NSN 5935-01-328-8619