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 6610-01-422-2376
NSN 6650-01-446-1160
NSN 5930-01-542-7697
NSN 6145-00-100-4358
NSN 2925-00-005-1618
NSN 4140-01-624-0444
NSN 5920-01-395-4209
NSN 5895-00-722-1084
NSN 5996-01-037-6505
NSN 5930-01-069-2776
NSN 6220-01-641-7684
NSN 5905-01-552-3764