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 6145-01-238-9297
NSN 6105-01-413-0209
NSN 5915-01-422-9979
NSN 5998-00-871-7821
NSN 4140-01-243-3187
NSN 6620-01-396-2149
NSN 6240-01-337-2509
NSN 5835-00-707-6266
NSN 6240-00-456-6238
NSN 5920-01-215-0497
NSN 6150-01-579-3417
NSN 6240-00-788-6972