Yokogawa is a provider of industrial automation and test and measurement solutions. The company operates in three segments: Industrial Automation and Control, Test and Measurement, and Aviation and Other Businesses. The Industrial Automation and Control segment offers field instruments, including flow meters, differential and pressure transmitters, and process analyzers, as well as control systems, programmable controllers, and various software products and services. The Test and Measurement segment provides waveform and optical communication measuring instruments, signal generators, electric voltage, current, and power measuring instruments, as well as LCD drivers, and confocal scanners for observation live cells. The Aviation and Other Businesses segment supplies cockpit flat-panel displays, engine meters, and other aviation instruments, marine navigation equipment, and meteorological and hydrological monitoring system equipment.