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 5920-00-624-3049
NSN 4140-01-255-5085
NSN 6105-01-284-2620
NSN 6130-01-529-1689
NSN 5910-00-089-3856
NSN 6105-00-058-1361
NSN 6130-00-006-8125
NSN 4140-01-100-1223
NSN 6220-01-067-8142
NSN 5935-00-378-1378
NSN 5910-00-780-6068
NSN 5895-00-225-9589