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 5910-01-136-9702
NSN 6240-01-054-2289
NSN 5990-01-292-2369
NSN 5999-01-339-5201
NSN 6135-00-660-8654
NSN 5925-01-154-0867
NSN 5998-01-169-1708
NSN 5999-01-063-8092
NSN 5996-00-403-7981
NSN 5905-00-132-6893
NSN 6645-00-892-1605
NSN 6110-01-534-6435