... :50-650C 3,Connection:buttom 4,Oil filled Exhaust Gas ThermometerExhaust Gas Thermometer specification: Dial Size:3", 4" 5", 6 ... Info:Other materials, ranges, connections are available upon requestExhaust Gas Thermometer picture: Why Choose us?Hangzhou Huatong Meter Co., ... in 1994 and specialized in developing and manufacturing various industrial thermometer. The company has three over 20 years work ...