Tokyo Keiso Co., Ltd. manufactures, sells, and maintains flow and level instruments. The company offers various flow measurement solutions, including metal tube variable area flowmeters, direct reading flowmeters, glass tube/plastic variable area flowmeters, sanitary flowmeters, purgemeters, purge sets, orifice and pitot tube flowmeters, thermal mass flowmeters and controllers, thermal flowmeters, V-cone flowmeters, differential pressure flowmeters, vortex flowmeters, electromagnetic flowmeters, coriolis force mass flowmeters, ultrasonic flowmeters, liquid flow control systems, wheel type flowmeters, flow monitors/switches, and flow set valves. It also provides a range of level measurements... 

Link: http://www.tokyokeiso.co.jp