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 5996-01-633-7979
NSN 2925-00-174-4322
NSN 5930-01-267-2840
NSN 5960-00-998-4324
NSN 5920-00-174-1657
NSN 5910-01-089-0416
NSN 6135-01-463-7077
NSN 6220-00-508-9155
NSN 5945-01-392-1068
NSN 5920-01-423-8595
NSN 4140-00-597-5260
NSN 6135-00-145-8884