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 6130-01-063-7446
NSN 2925-00-265-7539
NSN 6240-00-072-9966
NSN 5985-00-563-0829
NSN 4140-00-043-2716
NSN 7035-01-418-5499
NSN 2925-00-132-1280
NSN 5965-01-082-3757
NSN 6240-01-503-2038
NSN 7035-01-053-4769
NSN 5990-01-470-2565
NSN 4140-00-876-9285