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 6320-01-033-6624
NSN 5910-00-753-2850
NSN 5960-01-170-4057
NSN 4140-01-344-1106
NSN 5925-00-816-9929
NSN 6650-01-156-8173
NSN 5915-01-431-6951
NSN 5835-01-170-5537
NSN 5920-01-350-2312
NSN 5925-00-417-1017
NSN 5945-00-088-2320
NSN 5930-01-529-6866