... ,Range:50-650C 3,Connection:buttom 4,Oil filled Exhaust Gas ThermometerExhaust Gas Thermometer specification: Dial Size:3", 4" 5", 6" Stem ... Option Info:Other materials, ranges, connections are available upon requestExhaust Gas Thermometer picture: Why Choose us?Hangzhou Huatong Meter Co., Ltd ... to be one of leading supplier in this field already. High quality Exhaust Gas Thermometer