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 6320-00-468-8421
NSN 6135-01-088-4301
NSN 6150-01-068-1362
NSN 6220-01-475-3202
NSN 5930-00-845-4394
NSN 6110-00-992-3789
NSN 5975-01-607-0279
NSN 5975-01-382-8486
NSN 6135-00-583-3966
NSN 6620-00-899-6403
NSN 5965-01-012-1065
NSN 5996-00-503-8499