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 6110-00-327-4359
NSN 6145-01-446-2697
NSN 5930-01-445-5408
NSN 4140-01-046-6583
NSN 6685-00-407-1028
NSN 6610-01-496-9860
NSN 6610-00-840-6187
NSN 6220-01-090-0126
NSN 6145-01-222-3172
NSN 6685-01-486-1737
NSN 5985-01-645-4762
NSN 6240-01-069-4711