The rotating field indicator PCE-PI 10 is used to determine the direction of rotation of 3-phase voltage networks. Furthermore, the rotating field indicator is able to measure voltages up to 600V AC / DC. The rotating field direction is important for machines and plants. If the phases are not connected correctly, damage to connected motors and pumps can occur, for example. The rotating field indicator shows the direction of rotation on an LCD display. Furthermore, the display of the rotary field indicator shows whether a phase has been connected to the measuring lines or not. The measuring cables of the rotating field indicator are equipped with crocodile clips so that the measuring device can be connected directly to cables or screw contacts.