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 6610-01-618-7038
NSN 6150-00-832-0739
NSN 5920-01-657-4522
NSN 2925-00-096-5526
NSN 6645-00-857-0410
NSN 6610-00-769-6826
NSN 5990-01-130-4959
NSN 5920-00-877-9348
NSN 6645-00-467-6094
NSN 5990-01-476-0722
NSN 5905-01-176-5021
NSN 6220-00-647-3096