1. Mechanical zero adjustment

Mechanical zero adjustment method: Separate the two test leads and use a flat-blade screwdriver of appropriate size to adjust the mechanical zero adjustment screw located in the middle of the dial until the pointer coincides with the zero scale line.

2. Select the measuring range

If you don't know the size of the current, first use the highest current level (500mA level) to measure, and gradually switch to the lower current level until you find the appropriate current level (the standard is the same as the measured voltage).

3. Measurement method

4. Scale and reading

If the measured current is greater than 500mA, the 5A level can be selected.

Operation method: Set the transfer switch to the 500mA range, take out the red meter rod from the original "+" jack, and insert it into the jack marked 5A in the lower right corner of the multimeter to measure large currents below 5A.