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 5990-01-443-2931
NSN 4140-00-671-4532
NSN 5960-01-290-6919
NSN 5996-01-646-1264
NSN 5835-00-453-1969
NSN 6650-01-654-8017
NSN 5998-00-905-0637
NSN 5950-01-334-5695
NSN 6110-01-463-9010
NSN 6650-01-381-3299
NSN 6220-01-601-4748
NSN 4140-00-315-0146