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 6650-00-405-0702
NSN 6610-00-021-2259
NSN 5990-01-426-5215
NSN 5925-00-255-2048
NSN 4140-01-383-4738
NSN 6220-01-478-3228
NSN 5935-01-357-2947
NSN 5910-01-352-0917
NSN 5960-01-254-3541
NSN 5855-01-634-0259
NSN 5975-00-552-8222
NSN 6130-00-386-4937