Compact, robust die-cast aluminum profile spirit level with six-ring horizontal vial for 1% and 2% gradient measurement and additional rotatable angle vial, narrow, slanted profile shape, extra-strong rare-earth magnet system for adhesion to metallic components ? hands free when aligning and adjusting posts and supports, precisely milled V-groove measuring surface for optimum grip on pipes, rotatable 360° angle spirit level for positioning and direct checking of any angle, e.g. of pipelines, with belt pouch ? always ready to hand, easy cleaning, STABILA installation technology ensures long-term precision, measuring accuracy in the normal position ± 0.5 mmm, in the reversed position ± 0.75 mmm, the extra-strong adhesive force of the rare earth magnets is particularly needed in metal and scaffolding construction as well as for locksmith and welding work