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 7035-01-294-2688
NSN 5985-01-061-8221
NSN 6130-00-559-9606
NSN 6645-01-245-8390
NSN 5965-01-320-0260
NSN 6620-00-485-4136
NSN 4140-00-928-5657
NSN 5990-00-166-9476
NSN 5835-01-168-5167
NSN 6240-00-246-5060
NSN 6150-01-241-2376
NSN 5990-01-327-1094