6 Inch Foldable Triangle RulerThe retractable square ruler can increase the measuring distance when opened, save storage space when folded, and is easy to carry. 6" foldable extension arm eliminates the need for 7" and 12" brackets. Great gift for professionals and DIY dads (including pens)! < p>[Adjustable positioning tool] The angle can be freely selected. After setting the desired angle, tighten the positioning nut and press the central pull rod to achieve precise positioning; a variety of measuring functions are suitable for different scenarios. NEW 4 IN 1 TOOLS This new aluminum carpenter's square includes 5 tools: ruler, set square, carpenter's ruler, angle measurer. Can be used as a protractor, line scriber, saw guide and square. And the tail of the stainless steel needle pulling tool is fixed on the ruler with screws, which is convenient to carry. It is the most versatile and practical tool for scribing strips of wood! High quality carpenter square ruler The folding square ruler is made of alloy high-quality aluminum, the matte black surface prevents glare, is corrosion-resistant and durable, and is not easy to break. There are no sharp edges that can hurt your hands. Built-in strong magnets Built-in strong magnets hold the retractable arm, easy to open and fold without wobble, durable and the perfect tool for framing, roofing, construction and renovation projects. Sold by store