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 5935-01-169-2656
NSN 5950-01-390-2462
NSN 5930-01-509-9378
NSN 5965-01-494-6829
NSN 5996-01-015-8595
NSN 5925-01-345-9418
NSN 5930-01-278-9224
NSN 5996-01-266-4814
NSN 2925-01-106-3552
NSN 5930-01-192-5198
NSN 5998-00-818-1613
NSN 6685-01-632-8809