Before using a digital multimeter, be sure to read and fully understand the instructions and warnings outlined in the owner’s manual. Testing Batteries. Trevor Raab.

The multimeter should now display a reading of 120 volts or slightly above. You've now confirmed that house electrical power (120 volts AC current) is reaching the switch, ...

So when reading your meter, check whether the dial is moving clockwise or counter clockwise. When the hand is between numbers, you read smaller number that the dial has passed.

Analog vs. Digital Multimeter. You'll want a digital multimeter in most DIY electrical situations. Learning how to use and read a digital multimeter is much simpler than analog.