GOL26 Bosch Automatic Optical Level GOL26 Bosch Automatic Optical Level features a large aperture 26x-power lens allowing more light for a sharper image/magnification and a self-leveling compensator with transport lock that protects pendulum against damage or loss of calibration. GOL26 Bosch Automatic Optical Level features both horizontal/vertical cross hairs and Stadia lines which measure levels, alignment and estimates distance GOL26 Bosch Automatic Optical Level features a magnetic dampening system that quickly settles the system while reducing the effects of jobsite vibration and a Circular Bubble Vial with 90° Mirror for easy and fast setup.