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 5905-01-160-1939
NSN 5920-00-111-2375
NSN 6220-01-499-0635
NSN 6240-00-146-9322
NSN 6320-00-593-0379
NSN 6650-01-487-4949
NSN 5915-01-498-4940
NSN 5935-01-360-5311
NSN 6320-00-433-2773
NSN 5990-00-733-9262
NSN 6645-01-516-4720
NSN 6110-00-819-4917