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 5920-01-521-2424
NSN 6320-01-592-6248
NSN 6650-00-140-8776
NSN 5960-01-495-0859
NSN 6620-01-462-5196
NSN 5855-01-125-4768
NSN 5998-00-008-7835
NSN 6130-01-360-4875
NSN 5998-00-553-7172
NSN 5920-01-144-3841
NSN 5990-01-243-4233
NSN 6135-00-546-6273