Specifications include, but are not limited to: One (1) HWT-Pro™ Kit, consisting of carrying case, load and height verification devices, sample tray centering spacers for different model wheel trackers, NIST-traceable temperature indicator, USB cable and HWT-Spec Software. The HWT-Pro™ is a verification and diagnostic device for Hamburg Wheel Trackers which can measure and report a machine’s deviation from AASHTO T324 calibration requirements, including wheel load, wheel position, wheel speed, waveform, rut depth and water temperature. It can detect the wheel’s position along the wheel path, its center point and measure both static and dynamic load. All measurement devices are NIST-traceable and provided with certificates of calibration.