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 5999-01-202-6585
NSN 2925-00-239-6156
NSN 5930-01-642-1117
NSN 5910-01-178-9425
NSN 5895-01-061-5064
NSN 5930-01-198-6629
NSN 5835-00-572-7445
NSN 2925-01-412-9520
NSN 6110-01-248-6684
NSN 6645-01-383-1083
NSN 6685-01-251-1556
NSN 6610-01-479-8162