The combination of ultra-sturdy aluminium and stainless steel makes this square extremely robust and allows precise markings. Thanks to the special manufacturing process it is accurate to 0.01 mm per 100 mm. Thanks to the double handle on both sides, the square has a support area with scale that enables comfortable handling and the exact marking or adjusting of machines. Diamond-shaped scribing holes are lasered into the tongue to obtain perfect markings when the pencil is guided parallel to the edge.