The 5102B Multifunction Calibrator has the reputation of being an industry standard for calibration labs and a very cost effective way of performing meter calibrations to 4 1/2-digits. It is constructed in a rugged combination case with removable sealed end covers for military applications. Provides five functions including direct or alternating volts or amps plus ohms. Easy to use- simply enter the value and the function using the front-panel keyboard and set to operate mode. Features cassette tape back-up to allow the operator to save and recall complex or highly used calibration procedures, guarded output and 4-wire sensing, simple editing of output, digital display of output/function, and % error display. DCV and ACV ranges are 20 mV to 1100 V.