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 6320-01-631-7828
NSN 6105-01-480-6179
NSN 6130-01-314-2034
NSN 5930-01-472-3238
NSN 5999-01-530-2998
NSN 5920-01-338-4671
NSN 6110-01-446-7482
NSN 5975-01-328-0922
NSN 6645-00-925-0111
NSN 6110-01-077-8075
NSN 5945-01-140-0924
NSN 5975-01-643-7965