The Wavetek-Datron model 4950 multifunction transfer standard was designed as a
device for calibrating multifunction calibrators, by acting as a transfer between traditional laboratory references and the target calibrator located remotely. It has also found application as an audit standard for interlaboratory comparisons and proficiency testing. The 4950 is capable of measuring DC and AC voltage, DC and AC current, resistance and frequency over a wide range of values.