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 6650-00-754-2276
NSN 6135-00-985-7887
NSN 5998-01-506-1655
NSN 5920-01-293-4130
NSN 5960-01-301-3315
NSN 5998-00-192-2467
NSN 5935-01-604-8150
NSN 5905-01-418-3315
NSN 5996-00-149-1287
NSN 5975-00-257-8055
NSN 7035-00-270-5519
NSN 5996-00-658-8638