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 6610-01-633-8931
NSN 5935-00-556-7975
NSN 5985-00-361-8863
NSN 5998-00-196-0161
NSN 5975-01-422-0784
NSN 5945-01-424-7622
NSN 5910-00-655-0787
NSN 5990-00-568-4940
NSN 5935-01-012-9106
NSN 5960-00-056-5620
NSN 5910-00-375-1583
NSN 5999-01-395-7589