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 5910-00-930-0893
NSN 6320-01-050-1290
NSN 4140-01-410-7626
NSN 5985-00-603-1620
NSN 6320-01-211-6578
NSN 5895-01-514-0496
NSN 5990-00-274-3225
NSN 5965-01-144-3001
NSN 5855-01-574-3597
NSN 5998-01-254-0297
NSN 6150-00-678-4268
NSN 5945-01-414-2383