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 5996-01-633-7979
NSN 6685-01-305-4552
NSN 5960-01-369-8666
NSN 4140-01-426-8428
NSN 5965-01-396-0021
NSN 5855-00-337-3679
NSN 6220-01-014-5351
NSN 5975-01-451-3900
NSN 5935-01-004-9330
NSN 5905-00-491-4749
NSN 5998-01-098-7432
NSN 6610-01-091-7647