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 5990-00-757-5262
NSN 5920-01-527-4767
NSN 6320-01-054-3046
NSN 4140-00-011-7127
NSN 6620-01-339-1238
NSN 4140-01-585-1570
NSN 5935-00-251-7804
NSN 5945-00-610-6103
NSN 6105-01-559-1826
NSN 6220-00-155-4524
NSN 6650-00-202-4540
NSN 5985-00-607-6137