The Chroma 4705 Autocal Multifunction Calibrator is a high-precision calibrator which features high stability and full system capability. It is characterized by a wide-range coverage of DC Voltage, AC Voltage, DC Current and Resistance functions in a single unit. The 4705 incorporates a reference module conataining precision temperature-compensation elements, maintaining a high accuracy specification over the ambient temperature range of 23 degrees C + 10 degrees C. A high level of stability is achieved by use of super-selected reference components and ultra-stable gain-defining resisitors. The ‚Autocal‘ feature ensures that its a 24 hr. specifications are usable: not merely figures of merit.