Stabila OLS 26 Optical level with a 26-fold magnification in optical system. No batteries required to use with the focusing and easily accessible adjusting screw. It has a robust IP54 protection rated casing with easy-grip, shock-absorbing soft shell and solid protection of optical unit. Supplied with: 1 x Geo-folding Rule 2m, 1 x Plumb Line, Rain Protection, Adjusting Tools and 1 x Robust Carry Case. Specification: Accuracy of Height (Single Measurement): 1mm/10mMin. Focussing Distance: approx. 1mObjective Lens Aperture: 38mmStandard Deviation: < 2mm/kmMagnification: 26-foldProtection Class: IP 54