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 6620-01-431-9176
NSN 6240-00-501-7964
NSN 6105-00-299-6373
NSN 6610-01-484-8980
NSN 5915-01-472-8977
NSN 5990-01-571-3593
NSN 5935-01-537-3462
NSN 5910-01-055-8968
NSN 6610-01-382-4974
NSN 5975-01-417-3522
NSN 5965-01-579-1871
NSN 5910-00-079-4025