VEVOR Automatic Optical Level 24X Optical Auto Level Kit High Precision Height/Distance/Angle Level Measure Builders Level with Magnetic Dampened Compensator and Transport Lock, IP54 WaterproofProduct Features 24X 40MM Lens With a 24X magnification lens and 40 mm large aperture, this automatic optical level allows you to acquire a clear and bright image within the range of 393 ft. In addition, it provides excellent accuracy of 1 16 inch at 100 feet. Self leveling Compensator w Lock This optical level kit contains a magnetic dampened compensator to reduce the effects of vibration, while the locking device protects the pendulum against damage