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 6145-01-220-2309
NSN 6685-01-399-4134
NSN 5835-01-414-3258
NSN 4140-00-869-1435
NSN 5999-01-261-2266
NSN 5998-01-479-8024
NSN 5935-01-481-4103
NSN 6650-00-904-9485
NSN 5960-01-100-5065
NSN 5925-00-936-8096
NSN 6150-01-428-9961
NSN 5975-00-074-2072