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 5985-00-666-2987
NSN 6650-00-491-0277
NSN 6130-00-583-0880
NSN 6620-01-225-4996
NSN 4140-01-594-5974
NSN 5855-01-105-7793
NSN 5835-01-434-0790
NSN 5855-00-014-5008
NSN 2925-00-526-4541
NSN 4140-01-399-0330
NSN 5915-01-506-1452
NSN 6620-01-483-1138