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 5855-01-461-9207
NSN 6110-00-226-1753
NSN 5855-00-288-1408
NSN 6685-00-239-4014
NSN 6130-00-306-0710
NSN 6110-00-958-3794
NSN 4140-00-480-2592
NSN 6240-01-579-4734
NSN 6130-00-270-6930
NSN 6645-01-560-9339
NSN 5990-01-092-1963
NSN 6645-01-460-4339