Heat treated
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 5920-01-268-2648
NSN 5950-00-462-1792
NSN 5960-00-904-8145
NSN 5915-01-629-2686
NSN 6130-00-217-7695
NSN 5910-00-509-9973
NSN 6130-01-262-2267
NSN 6650-01-406-4959
NSN 5975-00-939-7854
NSN 6650-01-393-2929
NSN 5998-00-284-3804
NSN 5925-01-554-4936