The Fluke 714B is the most advanced temperature calibrator on the market, offering unmatched accuracy, stability, and ease of use. With its patented dual-zone technology, the 714B can calibrate both temperature sensors and transmitters simultaneously, saving you time and money. The 714B also features a large, backlit display that makes it easy to read even in low-light conditions. And with its rugged construction, the 714B is built to withstand the toughest environments.