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 5905-00-005-2670
NSN 5855-00-125-0780
NSN 2925-00-596-9775
NSN 5920-01-591-0490
NSN 5999-01-572-8748
NSN 6220-00-285-5786
NSN 5835-00-946-2656
NSN 5975-00-484-2223
NSN 5950-01-642-3803
NSN 5998-00-589-1423
NSN 6610-00-478-2815
NSN 5910-00-724-0307