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 6130-00-344-8161
NSN 6620-01-420-6831
NSN 6220-01-297-6149
NSN 6645-00-895-1515
NSN 5996-00-278-5193
NSN 5985-00-798-4817
NSN 6685-01-394-5861
NSN 5835-00-523-0736
NSN 2925-01-320-0965
NSN 6645-00-469-5963
NSN 5935-00-540-5641
NSN 5990-01-171-9304