Engineers may need a sound level calibrator, radio frequency calibrator, power-meter calibrator, voltage-current calibrator, or another type for electronic test equipment calibration. Electronic calibrations are necessary for maintaining your equipment for general monitoring and testing purposes. Calibrators enable you to solve problems with your equipment on your own, on site. Many calibrators are portable and print certificates without the need for a computer. Used and refurbished calibrators can save money and give a higher return on investment.