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 4140-00-569-4096
NSN 5930-01-460-6594
NSN 5930-01-508-7793
NSN 5835-01-264-8782
NSN 5895-01-158-1357
NSN 6135-01-385-7276
NSN 5925-01-520-8900
NSN 5960-01-553-4557
NSN 6240-01-333-7826
NSN 6135-01-340-2599
NSN 5915-00-359-7776
NSN 4140-00-905-6570