Moving-coil panel meters are suitable for measuring DC currents and voltages. Their main feature is their low power consumption. Connected to measuring transducers and with suitable dial, they can be used for measurement in other quantities. For currents above 100A they must be connected through a shunt. In this case, the instruments aare adjusted for a copper twin-wire connection cable. Self-shielding moving-coil system, with core magnet and hairsprings for the creation of the restoring torque. Pivot suspension with spring loaded jewel bearings for vibration and shock resistance.