A multimeter or a multitester is an electronic measuring tool that is a combination of several tools in one unit. It usually includes an ammeter, voltmeter, and ohmmeter. Digital multimeters are sometimes called DMM too.
Different names and different types [change]
There are many different names for the multimeter like multitester. It just depends what is being measured. If measuring resistance then it would be called an Ohmmeter, and switch it to ohms, or for volts it would be Voltmeter. Sometimes it is called a mixture of things like Volt/ohm meter or VOM. Most meters can measure volts, amps, and resistance.
How it can be measured [change]
The multimeter can be used to measure the voltage of a battery. It can also be used for measuring the voltage across two points in a circuit. The Voltmeter is placed in parallel between the positive and negative terminals of the battery. It can also be used to measure resistance and amps hence the name of some meters "Voltmeter, Ohmmeter, and Amperage".
- "multimeter". http://www.ehow.com/about_5038113_types-multimeters.html. Retrieved 5/29/12.
- "multimeters". http://www.saddleback.edu/ap/mse/phys/4b_labs/physics%204b%20labs%20pdf/multimeterlab.pdf. Retrieved 5/29/12.