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 6150-01-493-9957
NSN 6320-00-831-2227
NSN 6150-00-806-4302
NSN 6130-01-226-2435
NSN 5915-01-394-4967
NSN 5835-01-373-9506
NSN 5930-00-328-7299
NSN 6645-01-311-9004
NSN 5915-01-237-8423
NSN 5835-01-461-8184
NSN 5998-01-614-5442
NSN 6620-01-224-9007