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 5975-01-398-9128
NSN 5920-01-555-6944
NSN 6145-01-422-0806
NSN 6650-00-400-4977
NSN 6645-01-066-1195
NSN 6135-01-062-9356
NSN 5835-01-515-6537
NSN 5960-01-177-0338
NSN 6610-00-190-3684
NSN 2925-00-124-5465
NSN 5930-01-660-5680
NSN 6320-00-681-1324