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 6320-01-501-7935
NSN 5996-00-772-9175
NSN 6110-00-400-3353
NSN 5925-01-432-0149
NSN 2925-01-161-7440
NSN 6135-00-613-1068
NSN 6150-01-591-1329
NSN 7035-00-470-4977
NSN 5998-01-328-2678
NSN 5935-00-763-8915
NSN 5925-01-334-1891
NSN 6320-00-110-8005