Right Weigh's 202 series in-dash digital gauges have a color touchscreen display, are equipped with Bluetooth capabilities, and designed to mount in the cab of any tractor or straight truck with air suspension. After both an empty and loaded calibration has been performed at a certified ground scale, the gauge will reliably display the on-the-ground axle group weight in pounds or kilograms. Models are available with up to four air sensors to monitor up to four separate axle groups with one height control valve (HCV) each or any combination of axle groups with a total of four HCVs. This makes the interior digital gauge a great option for dedicated tractor-trailer sets.