How to use multimeter as voltmeter DC voltage test

USE Multimeter as voltmeter
The DC voltmeter is used to measure direct current voltage or electrical pressure of a circuit. the unit of measure is in volt(V). Multi-meters can be used as voltmeter and this is done by connecting the instrument across the circuit . It requires correct application of the polarity. Your circuit must be powered up in conducting this test

Procedure:

1.  Check the pointer of the multi-tester to zero 
2. Set the knob to DCV. Set the voltage higher than the estimated value being measured. If the voltage range is unknown,get the estimate value by setting the knob at the top level (1000V) then choose a proper range for exact measurement
3. Connect the multimeter across the circuit.Attach the black lead of the meter to the  to the negative (-) connection of the circuit ,and the red test lead to the positive (+)
4. read the voltage value.

Attention:

• Observe the correct polarity of the meter.
• If the pointer deflects backward or the display to negative value disconnect the test probe immediately and reverse the connection of the pointer.
• Always estimate the value of the voltage range to top level and gradually lower it until you can read it conveniently.
• Do not touch the test probe.