The exhaust gas thermometer which eliminates the difficulty to read the exhaust temperature caused by engine vibration. This thermometer can be mounted directly on the exhaust duct and contains a shock absorbing liquid of high viscosity, which eliminates wear of the internal moving parts made sensitive by vibration. At the same time, lubrication of moving parts is taken care by the liquid, thus obviating corrosion. Approved by German Lloyd Certificate No.12 026-98 HH