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 2925-01-440-7617
NSN 5990-00-212-4316
NSN 5996-01-235-1643
NSN 6130-00-422-5593
NSN 5999-00-960-8232
NSN 6240-00-185-8367
NSN 5915-01-168-6570
NSN 2925-01-632-5913
NSN 6145-01-088-0387
NSN 2925-00-146-0179
NSN 5930-00-420-3194
NSN 5835-01-360-2657