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 6145-00-354-6706
NSN 6150-01-416-8030
NSN 2925-01-522-5631
NSN 6240-01-476-1612
NSN 5960-00-697-3623
NSN 6650-00-287-5868
NSN 5835-01-616-6131
NSN 2925-00-105-3907
NSN 6105-01-346-6798
NSN 5965-01-510-3456
NSN 5996-01-435-7592
NSN 5915-01-377-5287