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 6145-01-463-1773
NSN 6110-01-123-7285
NSN 4140-01-130-7858
NSN 2925-01-180-7793
NSN 6645-01-473-3752
NSN 6130-01-442-8759
NSN 5945-01-505-2487
NSN 5945-01-147-5727
NSN 5835-01-089-7615
NSN 5999-00-539-2890
NSN 5996-00-932-5301
NSN 5920-01-202-7166