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 5990-01-612-5323
NSN 5960-01-536-9763
NSN 6610-00-012-8072
NSN 5960-01-186-5023
NSN 6135-00-519-1325
NSN 4140-01-358-7889
NSN 6320-00-994-0179
NSN 6650-01-494-2084
NSN 6685-01-062-4652
NSN 6650-00-515-6002
NSN 4140-01-116-3138
NSN 7035-01-403-2841