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 5905-01-123-7640
NSN 6650-01-071-1234
NSN 5996-01-400-3558
NSN 5945-01-652-5596
NSN 2925-01-629-4600
NSN 5985-00-148-8233
NSN 5998-00-478-9288
NSN 6130-01-199-7595
NSN 6650-01-592-1107
NSN 5985-01-174-0622
NSN 5835-00-833-7080
NSN 2925-00-293-5296