Adjustable divider resistor device

An adjustable divider resistor device comprises a resistor adjusting portion, a binding post A and a binding post C are connected with one end of the resistor adjusting portion, a binding post B and a binding post D are connected with the other end of the resistor adjusting portion, and a protective resistor is arranged between the binding post A and the resistor adjusting portion. The resistance adjusting part comprises a plurality of rotary adjusting parts which are connected in series, each rotary adjusting part comprises a ten-gear knob and nine fixed-value resistors, and the nine fixed-value resistors are connected in series and are sequentially connected with ten contacts of the ten-gear knob. The adjustable divider resistor device provided by the utility model is convenient in wiring, has a multi-gear selection function, can intuitively present the size of a selected resistor by adjusting gears with different precision, improves the accuracy and convenience of a field test, and is more accurate by adop