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 4140-00-349-3581
NSN 6105-01-350-3333
NSN 5999-01-298-4454
NSN 4140-01-491-9655
NSN 6220-00-905-5686
NSN 5930-00-177-8490
NSN 6150-01-462-5036
NSN 6220-00-235-3565
NSN 5920-01-481-3400
NSN 6110-00-101-4704
NSN 6645-01-380-6111
NSN 5935-01-331-8132