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 5915-01-231-6847
NSN 5895-00-665-3991
NSN 6320-01-455-3394
NSN 6645-01-400-2119
NSN 6645-00-200-2324
NSN 5990-01-332-6722
NSN 6610-01-301-3513
NSN 5998-01-290-3913
NSN 2925-00-999-8967
NSN 5999-01-432-4624
NSN 5998-00-628-4555
NSN 7035-00-408-0269