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 5910-01-429-1059
NSN 6320-01-600-5808
NSN 2925-00-288-1394
NSN 5895-00-773-2926
NSN 7035-00-541-8516
NSN 5945-01-478-5260
NSN 6130-01-524-8399
NSN 2925-01-289-6448
NSN 4140-01-227-1342
NSN 5999-00-818-4935
NSN 5945-01-369-2733
NSN 5985-01-263-7952