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 6650-01-480-0053
NSN 5999-00-175-4561
NSN 5990-00-959-2514
NSN 4140-01-007-0590
NSN 5920-01-485-6785
NSN 5905-01-162-3954
NSN 6685-00-230-4267
NSN 5835-00-435-1428
NSN 5905-01-265-3759
NSN 7035-00-126-1899
NSN 5915-01-541-1647
NSN 7035-01-207-8704