JEOL Ltd. is a Japan-based company mainly engaged in the manufacture, sale, maintenance, development and research of scientific instruments, semiconductor related equipment, industrial and medical equipment, and related products and parts. It operates through three business segments. Science and Measurement Equipment segment manufactures and sells three types of equipment. Electron optical devices include electron microscopes, peripheral devices and others. Analytical instruments include nuclear magnetic resonance equipment, electron spin resonance equipment and others. Measurement and inspection equipment include scanning electron microscopes, analytical scanning electron microscopes, peripheral equipment and others. Industrial Equipment segment manufactures and sells electron beam lithography equipment, linear electron guns and power supplies and others. Medical Equipment segment manufactures and sells clinical test information processing systems, and automatic amino acid analyzers.