A knob to calibrate the meter to zero when measuring resistance. 3. Operation Instructions A. Measuring DC Voltage (DCV) Plug the Black probe into - and the Red probe into + .
Before taking any measurements, place the meter flat on your workspace. Look directly down at the needle. If the needle does not sit exactly over the zero mark on the far left of the voltage scale, use a small flat-head screwdriver to slowly turn the mechanical adjust screw until the needle aligns perfectly. 2. Measuring DC Voltage (DC V) micronta multimeter 22 212 user manual