MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Digital ammeter. This device is used to measure electrical current (the amount of electrons flowing past a point in the circuit). This is measured in amperes (amps), and is closely related to the voltage of the power source and the resistance of the circuit. This is a digital ammeter, displaying the amount of current as digits on an LCD (liquid crystal display) screen, rather than by use of a moving needle on a dial (analogue). The voltmeter is connected to the circuit at the red (+) and black (-) points, and turned on and off by the switch at upper left. This model, from SATZ, is designed to measure currents of up to 10 amps DC (direct current).
Model release not required. Property release not required.