Voltmeter is specifically for measuring electrical voltage, not current or resistance.

Measurement Device

Voltmeters are used in technical or scientific settings, usually by professionals or students.

Technical Context

Digital voltmeters give numerical readings, analog ones use a moving pointer over a scale.

Digital vs. Analog

 and I can put charge on one of the plates from a battery. And I can measure the charge separation with this voltmeter here. Now -- let's make sure it's working. So when I wave my hand near the plates, you can see that the voltage changes