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 4140-01-422-3744
NSN 6220-01-444-7668
NSN 6135-01-247-5660
NSN 5920-01-279-9509
NSN 6220-00-243-2288
NSN 6620-01-462-5196
NSN 6320-00-908-6841
NSN 5910-01-509-2495
NSN 5975-01-406-9970
NSN 6130-01-386-3858
NSN 5998-01-485-0288
NSN 5999-01-623-3285