To set the ride height, secure the thumbscrew on the etched number which is preferred. Place the gauge underneath the vehicle (front and rear) at the predetermined height and touch the suspension to the gauge. If a gap exists, raise shock collars to lower the ride height until it's matched to the gauge. If no gap exists or the spacing is too tight, lower the shock collars to raise the ride height to the desired amount. Most racers like a half millimeter space or a small feeling of space during a final check. Features: