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 5985-01-252-8822
NSN 6220-01-243-6995
NSN 5910-01-557-8323
NSN 5965-00-636-1761
NSN 6645-01-383-7362
NSN 6620-01-390-1121
NSN 5895-01-187-8281
NSN 5910-01-156-8701
NSN 5905-01-601-6653
NSN 4140-01-347-4400
NSN 6240-01-286-8275
NSN 5990-01-206-3606