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 5998-00-853-7566
NSN 5945-00-526-0310
NSN 6130-00-273-1111
NSN 4140-01-378-6386
NSN 5835-01-242-9806
NSN 5925-01-327-5728
NSN 5990-00-887-0147
NSN 2925-01-562-1663
NSN 6240-01-418-0282
NSN 5975-00-110-8148
NSN 6130-01-438-6960
NSN 6130-00-180-5149