Like many other types of transducers, torque transducers use strain technology to measure. The sensor is usually a metal elastomer with a strain gauge (SG) mounted on it. The strain gauge is firmly attached to the elastomer. If an external load acts on the sensor, the measuring body will be deformed. The resistance of the strain gauge will also change. In this way, the magnitude of the load can be measured by the change in resistance. This applies not only to torque sensors, but also to load cells, force sensors and other types of sensors.