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 4140-00-225-8586
NSN 6320-01-247-0898
NSN 6620-01-029-3705
NSN 6135-01-343-1592
NSN 6220-01-103-3059
NSN 4140-00-679-9512
NSN 5920-01-183-7938
NSN 6645-00-321-6071
NSN 5999-01-538-6481
NSN 5960-00-722-9729
NSN 5945-01-025-9810
NSN 6645-00-825-5677