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 2925-01-243-7736
NSN 5950-00-221-2538
NSN 5920-01-235-4141
NSN 6220-01-166-3348
NSN 6610-01-506-7887
NSN 5905-00-528-4412
NSN 6135-00-985-7846
NSN 6645-01-365-8020
NSN 6220-01-145-4993
NSN 6650-01-011-3472
NSN 6105-01-074-9074
NSN 5960-01-359-6630