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 6610-00-496-7842
NSN 6130-00-083-8902
NSN 5925-01-426-2236
NSN 6620-00-113-9145
NSN 5915-01-004-6316
NSN 5990-01-206-8895
NSN 5945-01-038-9193
NSN 6650-00-977-7533
NSN 5965-01-298-6313
NSN 5975-01-515-9709
NSN 5935-01-535-0915
NSN 6610-01-249-3243