Most of us carry mechanical tools in our Model A’s – screwdrivers, wrenches and pliers -and we should carry electrical tools, too. Chief among them are a multimeter or a test lamp.
A multimeter is an electrical measuring instrument. A multimeter can be used as an ammeter to measure current, a voltmeter to measure voltage, and an ohmmeter to measure resistance. A test lamp, which is simply a light bulb with two wires, can be used to check for power in a circuit.
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