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 5910-01-381-8337
NSN 5930-00-872-7747
NSN 5998-01-374-6600
NSN 5975-00-283-1320
NSN 6650-01-609-1993
NSN 5930-01-304-5438
NSN 6150-01-034-5595
NSN 5855-00-198-3197
NSN 6135-01-111-1495
NSN 5965-01-512-6901
NSN 5835-01-009-2417
NSN 6620-01-265-2887