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 5985-00-887-9933
NSN 6650-01-019-0854
NSN 4140-01-555-8190
NSN 4140-01-534-9987
NSN 5945-01-242-1839
NSN 5965-01-263-6966
NSN 6240-00-126-4551
NSN 5975-01-539-6266
NSN 6650-01-203-8263
NSN 5835-00-315-3797
NSN 5965-00-689-1545
NSN 7035-01-584-1350