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 5930-01-276-8187
NSN 5945-00-382-5849
NSN 4140-00-401-3123
NSN 5920-00-936-7565
NSN 5945-00-141-0160
NSN 5915-01-070-8470
NSN 6145-01-444-1668
NSN 5915-00-359-7776
NSN 6130-01-533-5088
NSN 5935-00-519-0281
NSN 5960-01-579-1661
NSN 6620-00-630-8812