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 5910-01-268-0741
NSN 5915-01-128-5401
NSN 5920-01-237-7854
NSN 5935-00-599-7415
NSN 5950-01-347-2152
NSN 5998-00-621-4542
NSN 6150-01-044-7587
NSN 5855-00-221-9435
NSN 4140-01-104-2396
NSN 6610-01-464-5517
NSN 5930-00-417-4710
NSN 5835-01-580-0446