Features:It can accurately show the exact degree downhill, uphillCan be detailed positioning the slope angle of the left or rightAdjustable stand can be installed in any position, as long as you can maintain a balanceAs a product which can measuring car tilt and elevation angle and car body rotation angle. This compass can monitor the car body rotation angle at any time and provide the data of slope and inclination for you to know more about the road conditions when you are drivingStreamlined design with beautiful appearance, compact and light weightThe best workmanship and design, is the best choice for your journey Installation:The base comes with adhesive easy to install.Can be attached to the interior of the car to facilitate observation of any place.Place the car on a level surface and then manual adjustment to the level surface. Note:Left and right oblique side can not exceed 40 degrees, otherwise there will be dangerousDue to the influence of gravity, when your car is accelerating or decelerating, the instrument may have errors Specifications:Material: ABSShell Color: BlackSize: approx. 12.3x6cm/4.84x2.36Quantity: 1 Pc Note:Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bidDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes:1 x 3 in 1 Car Compass