PROBLEM TO BE SOLVED: To provide a contact internal thermometer capable of suppressing occurrence of a measurement error by securing the easy contact between a surface of a measuring object and a probe.SOLUTION: A contact internal thermometer 100 comprises: a first probe 30 and a second probe 31 which come into contact with a measured surface of a measuring object； a protruding part 23 protruding on the measurement surface side on both outward sides in an arrangement direction of at least the first probe 30 and the second probe 31； a first temperature sensor thermally connected to the first probe 30； a second temperature sensor thermally connected to the second probe 31； and a controller which calculates the internal temperature of the measuring object on the basis of the temperatures detected by a first temperature sensor 32 and a second temperature sensor 33.【課題】接触式内部温度計において、測定対象物の表面とプローブとを確実に接触させやすくし、測定誤差の発生を抑制する。【解決手段】測定対象物の被測定面に接触する第１のプローブ３０と第２のプローブ３１と、少なくとも第１のプローブ３０と第２のプローブ３１の配置方向の外側両側において測定面側に突きだす突出し部２３と、第１のプローブ３０と熱的に結合される第１の温度センサと、第２のプローブ３１と熱的に結合される第２の温度センサと、少なくとも第１の温度センサ３０及び第２の温度センサ３１により検出される温度に基いて測定対象物の内部温度を算出するコントローラと、を有する接触式内部温度計１００。【選択図】図２
