The multifunction calibrator M142 calibrates electric quantities in laboratories and production lines that are manufacturing meters. It also can calibrate and adjust meters meters that are used for measuring voltage, current, resistance, capacity and frequency. Harmonic and also non-harmonic shape signals enable testing of meter test parameters with a signal with a crest factor. Frequency can be set using the frequency modes, the amplitude and also the duty ratio. They can calibrate oscilloscopes. The calibrator can measure temperatures with TC and RTD sensors. The calibrator has a built-in multimeter for pretty much independent use or for simultaneous operation as well. The M142 can test transducers, regulators and evaluating units without the necessity of any other measuring instrument.