The professional optical level Bosch GOL 26 D is the ideal leveling device for surveyors and other professionals. This powerful telescope offers 26x magnification. There is also a built-in target collimator and a built-in circular scope. The extremely robust design makes it ideal for outdoor use. A self-sealing compensator protects the pendulum against damage and loss of calibration during transport. It provides measurement accuracy of ± 1.6 mm at 30 m and has a working range of up to 100 m