Multifunctional Folding Triangle Ruler: Carpenter's Square. The folding speed square and 6-inch folding extension arm can meet 6-inch or 12-inch layout needs; once opened, the measuring distance increases.When folded, its storage space will be reduced, making it easy to carry. It has 2 units of measurement, metric and imperial, which is more convenient for your measuring habits.Adjustable carpenter's square tools: the triangular ruler can be bent and the angle adjusted; use the adjustable positioning tool for carpenter's squares to freely choose the angle, after adjusting to the desired angle, tightenthe positioning nut and press the central pull rod to achieve precise positioning; a variety of measuring functions, suitable for different scenarios.High-quality material Carpenter's Square: Preciva carpenter's squares are made of high-quality aluminum alloy, with a matte black finish to prevent reflections, corrosion resistance, and good oxidation resistance.not easy to break.Stainless Steel Needle Square for Carpenters and Joiners: The internal magnetic ruler stays securely in place, won't easily fall off, and has a long lifespan. Concealed stainless steel scribing point with a line at the end, screwed in place.and fixed to the body of the ruler, not easy to fall off and easy to carry.Speed Square widely usedMultifunctional folding triangular ruler for woodworking; can draw angles from 45° to 90°, balance lines, vertical lines, equidistant center points, and a positioning knob.Adjustable so that all points of intersection of the drawn line and the edge are equidistant. To draw slopes, chamfer the ends of the roof rafters and open the ends.