Digital Multimeter

... apart from amps, volts, and ohms, many DMMs can measure parameters including frequency, capacitance, continuity, and temperature....

Digital multimeters or DMMs can measure a variety of different parameters within an electrical circuit. The basic DMMs can measure amps, volts and ohms, as the older analogue meters did, but with the ease of incorporating further functionality into an integrated circuit, many digital multimeters are able to make a number of other measurements as well. Many of them include functions such as frequency, continuity (with a buzzer to facilitate easy measurements when looking at the circuit board), capacitance, temperature and often a number of other measurements as well.