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 6620-00-010-8190
NSN 6135-00-557-8874
NSN 5895-01-630-2714
NSN 6645-00-183-8812
NSN 6240-01-331-5246
NSN 5965-01-321-9598
NSN 6620-00-162-9877
NSN 6320-01-470-6826
NSN 6645-00-415-9018
NSN 5960-01-550-8038
NSN 5998-00-603-0727
NSN 6240-00-777-1878