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 6650-01-444-1321
NSN 5965-01-475-7871
NSN 6685-01-609-6713
NSN 5915-01-381-0184
NSN 5975-01-441-8872
NSN 5950-00-011-1614
NSN 5920-00-985-5090
NSN 5910-01-296-3533
NSN 5910-01-496-1476
NSN 5950-01-367-2926
NSN 5935-00-470-9571
NSN 6650-00-903-4306