JEOL Ltd. engages in the manufacture, development, and sale of scientific and metrology instruments, semiconductor, industrial, and medical equipment. The firm also provides processing maintenance and services of related products. It operates through the following segments: Scientific and Metrology Instruments, Industrial Equipment, and Medical Equipment. The Scientific and Metrology Instruments segment provides electron microscopes, nuclear magnetic resonance devices, and mass spectrometers for research and development in biology and quality control. The Industrial Equipment segment handles electron beam lithography systems and high-frequency power supplies. The Medical Equipment segment offers automatic analyzers. The company was founded on May 30, 1949 and is headquartered in Tokyo, Japan.