The Additel ADT681 is the most accurate and versatile handheld pressure calibrator on the market. With an accuracy of ±0.025% of reading, it is the ideal choice for applications where precision is critical. The ADT681 also features a wide pressure range of -14.5 to 3000 psi, making it suitable for a variety of applications. Additionally, the ADT681 is equipped with a built-in data logger and a USB interface, making it easy to record and transfer data.