In this paper, the measurement of forces, pressure and torque is explained. Today in the world, after every new product, a test or measurement must be performed on that product in order to establish its reliability and accuracy. Without measurement, we cannot be sure that the quality of the product is good, and that we have met the basic conditions for its sale and meeting the needs and desires of the customer. Today, force, talc and torque are present in almost every drive machine, because without them nothing could be started. For this reason, it is important to monitor their parameters at all times and to be within normal limits, because any exceeding of the parameters can be a sign of a deformation or the cause of a malfunction. As technology has evolved throughout history, so have instruments and methods been developed to measure these physical quantities. In the past, people measured these physical quantities by hand, but today everything is automated and this work is done by sensors and transducers such asstrain gauges, which are described in detail in the paper. The principle of operation, types of gauges, the method of connection to the Wheatstone bridge are described, and their testing in real conditions was performed in order to prove their accuracy and reliability.