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 6320-01-538-6737
NSN 6240-01-468-6408
NSN 6150-01-144-1568
NSN 6320-00-937-5625
NSN 5935-00-960-0306
NSN 5945-01-379-7219
NSN 6150-00-090-6982
NSN 5915-01-111-4253
NSN 6220-01-218-5164
NSN 5915-00-018-8254
NSN 5920-01-325-1750
NSN 5990-01-503-9804