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 4140-01-211-4620
NSN 6220-00-892-2529
NSN 5835-00-001-5456
NSN 5835-00-532-5910
NSN 5950-01-350-3702
NSN 6320-01-631-7828
NSN 6220-01-415-3115
NSN 6105-00-462-3295
NSN 5960-01-088-6553
NSN 6240-01-341-6579
NSN 6130-01-081-3412
NSN 6135-00-416-2898