HOW TO USE 1. Use a four-wheel aligner to determine whether the camber angle needs adjusting; 2. Remove the four-wheel aligner sensor (clamp), and remove the tire; 3. Place the magnetic level on the brake disc, and center the horizontal bubble of the level; 4. Press the On/Off switch of the level gauge to start up. After the reading is stable, press "Zero" to return to zero (when "0.0" and "zero" are displayed at the same time); 5. Replace the upper bolt of the original shock absorber with the upper eccentric bolt; 6. Adjust the eccentric screw to make the level reach the expected value, and lock the eccentric nut with a torque wrench (when the "inner arrow" points inward, it means a downward adjustment, while when the arrow points outward, it means an upward adjustment); 7. Install the tire and the clamp (sensor), re-measure with the aligner, and correct other angle data. Specifications - Material: High Density Aluminum - Power Supply: 2 x AAA battery - Product Weight: 0.2kg/0.44lb. Package Included - 1 * Digital Camber Gauge Digital display+ level gauge for higher accuracy Super magnetic power to ensure no fall during operation Last data memory LCD display Suitable for all vehicles, including cars, trucks, vans, SUVs, motorcycles, etc