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 6645-01-364-4042
NSN 5835-01-332-2867
NSN 6240-00-105-4328
NSN 5930-01-284-5667
NSN 5996-01-215-2769
NSN 5996-01-607-7035
NSN 5905-01-198-5711
NSN 5999-01-645-9440
NSN 5990-01-079-3271
NSN 5910-01-514-7309
NSN 6610-01-116-2527
NSN 5945-00-552-7728