JEOL, Ltd. (日本電子, Nihon Denshi Kabushiki-gaisha, Nihon meaning Japan and Denshi meaning electron) is a major developer and manufacturer of electron microscopes and other scientific instruments, industrial equipment and medical equipment. Its headquarters are in Tokyo, Japan, with 25 domestic and foreign subsidiaries and associated companies as of 2014. It is listed in the top ten businesses worldwide for analytical laboratory instrument manufacturing. JEOL's instruments are used by researchers around the world, including the University of Cambridge, University of Oxford, and MIT.