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 5915-01-175-1628
NSN 2925-01-110-1467
NSN 5835-01-426-6573
NSN 6240-01-200-7937
NSN 7035-00-009-8705
NSN 5920-00-276-8657
NSN 5920-01-250-2501
NSN 6135-00-351-8606
NSN 5935-00-516-5251
NSN 5950-01-259-7028
NSN 5935-01-645-4415
NSN 5960-00-710-9818