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 6610-01-017-7725
NSN 6620-01-440-9810
NSN 2925-00-020-7524
NSN 5915-00-166-3515
NSN 6685-00-854-7501
NSN 6110-00-422-4973
NSN 6320-01-631-7828
NSN 5975-00-740-8367
NSN 6240-01-073-9334
NSN 6620-00-257-2783
NSN 6105-01-123-5099
NSN 5905-01-494-2468