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 5915-01-540-4491
NSN 6610-01-565-2716
NSN 6105-01-308-6157
NSN 6150-01-188-7317
NSN 5930-01-415-0207
NSN 4140-01-574-5593
NSN 5915-00-269-4463
NSN 5855-00-408-2611
NSN 5990-00-226-7894
NSN 5835-01-384-3206
NSN 6220-01-470-1748
NSN 5975-01-077-4211