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 5855-00-930-9478
NSN 6320-00-450-7014
NSN 4140-01-378-5753
NSN 6685-00-089-3848
NSN 5925-01-194-5532
NSN 6150-00-410-7091
NSN 5915-01-093-0007
NSN 6320-01-171-3238
NSN 5835-00-089-0588
NSN 5999-01-462-2644
NSN 5935-00-557-2319
NSN 6240-01-097-4722