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 5915-01-535-7478
NSN 6685-01-363-5820
NSN 6650-00-899-1774
NSN 5925-01-475-1832
NSN 5855-01-256-2551
NSN 6645-01-213-1739
NSN 4140-01-056-3654
NSN 6650-01-568-0299
NSN 5999-00-692-6514
NSN 5998-01-113-9036
NSN 5925-01-609-3461
NSN 6240-00-527-8614