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 5930-01-239-7302
NSN 6610-01-557-6908
NSN 6645-00-664-4665
NSN 5985-00-952-3661
NSN 5999-01-588-1849
NSN 6650-00-356-5228
NSN 5920-01-084-6475
NSN 6240-01-200-0797
NSN 5920-00-445-3585
NSN 5975-01-151-4170
NSN 6650-01-406-9852
NSN 5975-00-393-1269