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 5920-01-442-7685
NSN 5965-01-471-3278
NSN 6240-01-142-2963
NSN 6650-00-140-8776
NSN 5998-00-052-1048
NSN 5965-01-633-8849
NSN 6240-01-426-5581
NSN 4140-01-019-0555
NSN 4140-01-560-4701
NSN 6650-01-513-2644
NSN 5930-00-898-4473
NSN 6105-00-956-7625