Aluminium rectangular profile with reinforcing ribs provides high stability and a secure grip during use. Integrated slip stoppers ensure a firm fit when marking out, preventing the spirit level from slipping. Stabila installation technology guarantees long-term precision, with measuring accuracy in normal position of ± 0.5 mm/m and in folding position of ± 0.75 mm/m. Stabila quality vials offer optimum readability, featuring highly transparent, resistant acrylic glass with precisely ground inner contours and fluorescent vial liquid. The spirit level includes two measuring surfaces for precise measurement in all positions. Coated measuring surfaces protect sensitive surfaces, while plastic end caps shield the profile from impacts. The electrostatic powder coating makes it easy to clean. Features include one horizontal bubble, one vertical bubble, and two coated measuring surfaces.