【Main Function】: The adjustable magnetometer tool helps you measure the camber of your wheel or brake disc by attaching the magnetometer to the wheel or brake disc. It allows you to return the strut to the original camber position after removing and reassembling the suspension, or check the amount of camber change before reinstallation. 【High Quality Material】: This instrument is made of high quality PC plastic, which is sturdy and durable. It is resistant to high temperature, oxidation, rust and corrosion. It has high compressive strength and a powerful magnet in its base. Using its strong magnetic attraction, it can be easily attached to various metal surfaces. 【Adjustable Design】: This gauge is adjustable, and it helps you maintain proper wheel alignment. The large adjustment knobs for convenient zeroing of bubble during castor angle measurement. It has a simple leveling adjustment from -5 degrees to 5 degrees. It is easy to use and operate the tool and the number on the tool is clear to read. 【Method of Use】: First, take off the wheel alignment sensor and the tire. Second, place the tool on the side of the suction wheel disc brakes, setting the water level to zero. Third, install the required positioning parts. Utilize a special tool to adjust the part's positioning to the desired angle indicated by the magnetic level gauge. Finally, if there's a slight deviation, recheck with the locator.