Device for Measuring Mechanical Quantity

A device for measuring mechanical quantity, the device measuring deformation quantity of an object to be measured, the device comprising:

• a metal body having a pipe shape;
• a first semiconductor strain sensor mounted on an upper surface of the metal body and configured to detect strain of the metal body;
• and
• a second semiconductor strain sensor mounted on a side surface of the metal body and configured to detect strain of the metal body,
• wherein the object to be measured includes a material having a thermal expansion coefficient larger than that of the metal body,
• the metal body mounted with the first semiconductor strain sensor and the second semiconductor strain sensor has a structure to be fixed to the object to be measured, and
• the object to be measured is fixed only on one side of the metal body mounted with the first semiconductor strain sensor and the second semiconductor strain sensor.