The moving-coil meters PRG 48/72/96/144 with profile scale are suitable for measuring sinusoidal alternating currents or alternating voltages. Moving-coil instruments with rectifier measure the arithmetic mean of the rectified current. Their scales are designed so that rms values are displayed for sinusoidal waveforms. The moving-coil movement is manufactured according to the latest findings and is characterised by low power consumption, high accuracy and particularly good damping. The devices can be installed in control panels, mosaic grids or machines.