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 6150-01-068-1362
NSN 5960-00-982-8546
NSN 5996-01-228-9306
NSN 4140-01-178-4585
NSN 7035-01-585-1093
NSN 5935-01-205-1612
NSN 6105-00-049-8891
NSN 5835-01-532-9373
NSN 6685-01-285-6459
NSN 5905-01-175-7954
NSN 5975-01-414-7080
NSN 6610-01-614-3720