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 5935-01-589-0104
NSN 5960-01-425-1454
NSN 5920-01-450-6682
NSN 6320-00-894-1644
NSN 6105-01-209-9153
NSN 5998-01-199-8718
NSN 6105-00-419-2573
NSN 5998-00-080-3653
NSN 5925-01-268-8694
NSN 5920-01-172-3877
NSN 5915-01-441-7857
NSN 5960-01-383-6262