Stopwatches are timing devices that measure time interval counting upward or downward and can be mechanical or digital. As they endure repeated use or age with service life, stopwatches can start to lose their accuracy and require calibration. Exact measurements are critical for industries that rely on precise timing data, and inaccuracies can be difficult to spot. Our calibration experts service a range of stopwatch manufacturers and models so our clients can continue to conduct their daily operations with precision and efficiency. All data generated in ATS calibration labs are traceable to the National Institute of Standards and Technology (NIST).