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 5910-01-111-2778
NSN 5895-01-214-1902
NSN 4140-00-432-5593
NSN 6105-01-078-4244
NSN 6320-01-072-2073
NSN 5915-01-533-9982
NSN 5915-01-239-4018
NSN 5996-00-834-8242
NSN 5910-01-441-9868
NSN 6620-01-246-7133
NSN 6320-01-521-1764
NSN 5930-01-600-0260