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 5855-01-208-1471
NSN 7035-01-371-0091
NSN 6645-01-308-2260
NSN 5999-01-449-0796
NSN 6130-00-153-3136
NSN 6150-00-089-2466
NSN 5999-00-925-6196
NSN 5920-01-063-6499
NSN 5996-01-268-1625
NSN 5999-01-149-2001
NSN 5998-01-102-2097
NSN 6150-01-458-7246