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 5950-00-781-5446
NSN 5935-01-111-9490
NSN 5910-01-141-0470
NSN 6135-01-328-6583
NSN 6610-01-284-6968
NSN 6150-01-628-1750
NSN 6620-00-243-1759
NSN 4140-01-470-7753
NSN 5999-00-128-2968
NSN 6645-00-719-9177
NSN 5999-01-660-9667
NSN 6620-01-025-4690