Whether your rig is built for off-road only, or you only dabble in off-pavement driving, you'll have fun watching the gauges on your Clinometer (also called an Inclinometer). In addition, it adds a measure of safety as you can judge your roll-over point (and avoid it!) The Clinometer features 2 gauges in one. The left tilt sensor displays side-by-side angle with respect to the horizon, and the right one displays front-to-back angle. The graphic read outs show the precise angle your Jeep is tipped at, in degrees. Both gauges illuminate for night driving (This requires attaching the wires coming out the back to your headlight dimmer switch. This is not required for anything other than illumination at night).