This thesis activity is aimed at designing and building a prototype of an instrument for measuring the steering wheel angle and the steering wheel torque, with the vehicle stationary and in motion. The project was carried out at the Turin-based company AMET Srl. The instrument, called Electronic Level, must have an appropriate mechanical fixing system able to adapt to different types of steering wheels. It has intelligence on board that can be programmed for carrying out tests, storing data, processing CAN messages, and PC interfacing. The system consists of three components: the first one is the Electronic Level fixed to the steering wheel with an anchor in three or four points, applicable to guarantee a secure and deterministic fixing, such as avoiding damages to the steering wheel.