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 6150-00-712-0256
NSN 5905-01-178-8352
NSN 5975-01-258-8171
NSN 4140-00-479-3949
NSN 5935-01-044-2359
NSN 6130-00-598-2034
NSN 6130-01-252-8823
NSN 5945-00-932-5219
NSN 6650-01-294-1067
NSN 7035-01-550-9760
NSN 5915-00-186-9346
NSN 6650-00-451-8174