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 6320-01-544-6447
NSN 5935-01-612-5581
NSN 6130-01-498-8091
NSN 6135-00-284-1406
NSN 5905-01-237-3852
NSN 5996-00-192-3597
NSN 6145-01-461-2750
NSN 6145-01-044-8800
NSN 2925-01-327-3069
NSN 5855-00-149-0766
NSN 6220-00-478-6480
NSN 4140-01-104-0743