Rectangular aluminium profile with reinforcing ribs for high stability and safe grip when working. Features an extra strong rare earth magnet system for adhesion to metal construction elements, allowing for free hands when aligning and adjusting posts and beams (up to five times stronger than usual ferrite magnets). Integrated slip stoppers ensure a firm fit when marking. STABILA quality spirit levels provide optimum readability with highly transparent, resistant acrylic glass that has precisely ground inner contours and fluorescent vial liquid. STABILA installation technology ensures long-term precision, with measuring accuracy in normal position of ± 0.5 mm/m and in folding position of ± 0.75 mm/m. The profile offers precise measurement in all positions, while plastic end caps protect it from impacts. It is easy to clean thanks to electrostatic powder coating and is particularly suitable for measuring tasks in metal and dry construction.