Abstract: An automatic gain setting circuit for automatically adjusting the gain of an amplifier which drives an analog meter. The gain of this amplifier is adjusted automatically with the push of a button switch so that the meter will read mid-range for the signal input to the amplifier. In this circuit, the operational amplifier is connected between an input signal and the analog meter readout. This operational amplifier utilizes a feedback circuit having a variable resistance which changes the gain of the amplifier as the resistance is changed. The resistance in this feedback circuit is changed by an electrical comparison circuit which compares the output signal from the amplifier with a reference voltage upon the push of a button switch. The reference voltage is preset to cause the meter to read mid-range. Once the button switch is pushed, the comparison circuit provides an output control signal which is directed to the feedback circuit of the operational amplifier.