Stabila OLS 26 Optical level with a 26-fold magnification in optical system no batteries required to use with the focusing and adjusting screw easily accessible It has a robust IP54 protection rated casing with easy-grip shock-absorbing soft shell and solid protection of optical unit also in front area Magnification 26-fold Minimum focussing distance approx 1m Objective lens aperture 38mm Protection class IP 54 Standard deviation < 2mmkm View in objective upright Diameter of field of vision at 100 m 21m Multipication constant 100 Addition constant 0 Compensator accuracy 05 Accuracy of height in a single measurement 1mm10m Circular vial 82 mm Horizontal circle Partition degree Increments 1° Horizontal circle 360° Supplied with Optical level OLS 26 Geo-folding rule 2m plumb line rain protection adjusting tools in robust carry case