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 6240-00-050-4522
NSN 5950-01-526-9340
NSN 5945-01-147-5727
NSN 6610-00-213-8544
NSN 5985-01-539-0245
NSN 5935-01-058-5500
NSN 6650-01-389-5862
NSN 5915-01-625-8642
NSN 5835-01-259-0815
NSN 5930-01-141-7740
NSN 5915-01-296-2204
NSN 5915-01-116-4507