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 6685-01-223-8882
NSN 5855-01-553-3368
NSN 5960-00-740-7285
NSN 6685-01-430-1142
NSN 6135-00-613-1068
NSN 5920-00-206-3595
NSN 4140-01-595-3827
NSN 6645-01-356-1181
NSN 6320-01-350-5570
NSN 6220-00-311-4291
NSN 5915-00-248-5824
NSN 6645-00-092-5091