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 5925-00-135-2086
NSN 5965-00-177-2932
NSN 5920-00-527-9473
NSN 6110-01-526-4208
NSN 5915-01-158-5602
NSN 6105-01-158-7618
NSN 5935-00-515-3675
NSN 5915-01-117-0733
NSN 5950-01-150-2298
NSN 6240-01-367-6561
NSN 6105-00-816-5405
NSN 6320-01-350-5570