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 6110-01-160-3732
NSN 5935-00-859-2842
NSN 4140-00-193-8879
NSN 5998-01-331-6463
NSN 6650-01-307-6009
NSN 7035-00-003-7518
NSN 6150-01-170-6968
NSN 5996-00-356-0680
NSN 5996-01-048-3754
NSN 6320-01-029-4220
NSN 5950-01-430-9276
NSN 5975-00-427-2866