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 5920-00-925-2639
NSN 5905-01-173-9048
NSN 6130-00-554-7852
NSN 6135-01-450-3781
NSN 5925-01-471-4570
NSN 5915-01-097-5480
NSN 5855-01-027-1571
NSN 5905-00-945-0451
NSN 5835-01-055-6063
NSN 5990-00-753-8870
NSN 6105-01-514-2294
NSN 5935-01-032-5005