Analog voltmeters are instruments that measure voltage or voltage drop in a circuit.

Analog multimeters are instruments that are used to measure electrical quantities such as voltage, current, resistance, frequency and signal power

Digital voltmeters are instruments that measure voltage or voltage drop in a circuit.

Analog ammeters are metered instruments that measure current flow in amperes.

Analog panel meters measure and display processes and electrical variables with a simple dial display

Digital-to-analog converter (DAC) chips convert digital signals that represent binary numbers into proportional analog voltages

Analog-to-digital converter (ADC) chips transform information from analog to digital form