ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Multimeter. A multimeter is a combined digital ammeter and voltmeter. From these it can also derive resistance. An ammeter measures the number of amperes (electric current) in a circuit. A voltmeter measures voltage (electrical force) in a circuit. The multimeter has its own power source. Here it is being used to measure the resistance of a small resistor.
Model release not required. Property release not required.