Multimeter, Oscilloscope

Multimeter

A multimeter is a combination device, (usually) capable of measuring current, resistance, or voltage. Most modern models measure all three, and include other features such as a diode tester, which can be used to measure continuity in circuits (emitting a loud ’beep’ if there is a short).

Oscilloscope

An oscilloscope, commonly called a ’scope’ by technicians, is used to display a voltage waveform on a screen, usually graphing voltage as a function of time.