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 5915-01-252-8683
NSN 4140-01-052-9892
NSN 6685-01-582-0727
NSN 6320-01-530-4870
NSN 5935-00-953-3116
NSN 5985-01-081-8130
NSN 6150-01-621-1983
NSN 6650-01-281-2148
NSN 5855-00-149-0766
NSN 2925-01-156-4335
NSN 5855-01-536-1409
NSN 5925-01-005-9481