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 5998-01-578-9865
NSN 5999-01-634-0576
NSN 5999-01-152-1929
NSN 6220-00-892-2529
NSN 5930-00-392-1945
NSN 6620-01-406-6840
NSN 6620-01-068-4498
NSN 6620-01-378-4108
NSN 6135-01-200-5144
NSN 5895-01-264-4646
NSN 5930-00-389-9275
NSN 2925-00-519-0766