Astra Depot Car Vehicle Inclinometer Angle Slope Tilt Indicator Level Meter Gradient Balancer Upgrade and Downgrade Slopemeter Finder Tool Make you a better understanding of road conditions, ensuring safety when driving Easy to operate and carry Response the datas of slope and tilt fast and accurately High degree of sensitivity, monitor the angles' change at any time Fit on flat surface, simply stick on the front of your car.