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 6685-01-394-5861
NSN 6135-01-449-0625
NSN 5975-01-095-3382
NSN 4140-01-555-7275
NSN 6620-01-220-4178
NSN 5985-01-363-0302
NSN 7035-01-227-2546
NSN 5999-01-432-3361
NSN 5999-01-562-1896
NSN 5835-01-519-2916
NSN 5855-01-522-0723
NSN 2925-00-486-0524