Below is the list of measuring instruments used in electrical and electronic work.
| Name | Purpose |
|---|---|
| Ammeter (Ampermeter) | Measures current |
| Capacitance meter | Measures the capacitance component |
| Current clamp | Measures current without physical connection |
| Curve tracer | Applies swept signals to a device and allows display of the response |
| Cos Phi Meter | Measures the power factor |
| Distortionmeter | Measures the distortion added to a circuit |
| Electricity meter | Measures the amount of energy dissipated |
| ESR meter | Measures the equivalent series resistance of capacitors |
| Frequency counter | Measures the frequency of the current |
| Leakage tester | Measures leakage across the plates of a capacitor |
| LCR meter | Measures the inductance, capacitance and resistance of a component |
| Megger tester | Measures Resistance of an Winding of Motor or Generator And Measures Earthing's Resistance |
| Microwave power meter | Measures power at microwave frequencies |
| Multimeter | General purpose instrument measures voltage, current and resistance (and sometimes other quantities as well) |
| Network analyzer | Measures network parameters |
| Ohmmeter | Measures the resistance of a component |
| Oscilloscope | Displays waveform of a signal, allows measurement of frequency, timing, peak excursion, offset, ... |
| Psophometer | Measures AF signal level and noise |
| Q meter | Measures Q factor of the RF circuits |
| Tachometer | Measures speed of motors |
| Signal analyzer | Measures both the amplitude and the modulation of a RF signal |
| Signal generator | Generates signals for testing purposes |
| Spectrum analyser | Displays frequency spectrum |
| Sweep generator | Creates constant-amplitude variable frequency sine waves to test frequency response |
| Transistor tester | Tests transistors |
| Tube tester | Tests vacuum tubes (triode, tetrode etc.) |
| Wattmeter | Measures power in a circuit |
| Vectorscope | Displays the phase of the colors in color TV |
| Video signal generator | Generates video signal for testing purposes |
| Voltmeter | Measures the potential difference between two points in a circuit. (Includes: DVM and VTVM) |
| VU meter | Measures the level of AF signals in Volume units |
| Cathode Ray Oscilloscope (CRO) | Check transistor |