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 4140-01-650-1208
NSN 5835-01-138-8622
NSN 2925-00-536-4574
NSN 5990-01-514-8708
NSN 5945-01-641-6593
NSN 6220-01-395-4136
NSN 5998-00-526-9253
NSN 6150-00-256-7957
NSN 5930-01-633-0765
NSN 6110-01-086-4204
NSN 5998-00-132-3318
NSN 5975-00-320-3150