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 6650-00-554-1457
NSN 6645-00-400-7955
NSN 5999-00-369-1529
NSN 5910-00-726-0129
NSN 4140-01-586-5845
NSN 5945-00-210-8882
NSN 5910-00-332-9023
NSN 5905-01-083-4796
NSN 5835-01-222-2437
NSN 5960-00-769-5103
NSN 5985-00-456-0240
NSN 5935-00-817-7300