mf47 multimeter resistance zero adjustment

The small black knob under or on one side of the large gear knob is the zero adjustment knob. Turn left to increase, turn right to decrease.

1. Mechanical zero adjustment, use a screwdriver to rotate the mechanical zero adjustment, so that the pointer is aligned with the infinity scale on the left (under the meter head, in the center);

2. Short-circuit the zero adjustment, touch the metal parts of the red and black meter rods, and adjust the zero adjustment potentiometer to align the pointer with the zero position on the right.

Note: When changing gears for resistance measurement, you need to re-zero (short-circuit zero adjustment).