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 6240-01-139-3377
NSN 5855-00-198-3197
NSN 6150-00-432-7305
NSN 6130-01-298-7971
NSN 5855-00-491-7079
NSN 2925-00-890-3240
NSN 7035-01-560-2623
NSN 5920-01-269-3047
NSN 5920-01-467-3246
NSN 6610-00-140-1719
NSN 6320-01-266-7607
NSN 5950-01-074-6702