Horizont spirit level with four spirit levels, accuracy 0.5 mm / m = 0.0285 °, anodized abrasion-resistant surface, wall thickness ALU profile 1.5 mm, liquid in spirit levels is UV stabilized and fluorescent, 3 horizontal spirit levels - two inclined 1 and 2%, optical horizontal spirit levels - facilitate and increase the accuracy of measurements, the spirit level is resistant to operational shocks, 10-year warranty on spirit levels, EACH PIECE ELECTRONICALLY TESTED. [***]