Multifunctional Folding Triangle Ruler: Joiner's Square Folding speed square, 6 inch folding extension arm can meet 6 inch or 12 inch layout needs; when opened, the measuring distance will increase. Awhen folded, the storage space will be reduced, making it easy to carry. It has 2 measurement units, metric and imperial, which is more convenient for your measurement habits. Adjustable Carpenter's Square Tools: The triangular ruler can be bent and the angle can be adjusted; use the carpenter squares adjustable positioning tool to freely choose the angle, after adjusting to the desired angle, tightenthe positioning nut and press the center pull rod to achieve precise positioning; a variety of measurement functions, suitable for different scenarios. High Quality Material Carpenter's Square: The carpenter's squares are made of high quality aluminum alloy, with matte black finish to prevent glare, corrosion resistance and good oxidation resistance ,not easy to break. Stainless Steel Needle Square Carpenter Carpenter: The inner magnetic ruler can be kept intact, not easy to fall off, and has a long service life. Concealed stainless steel scriber with line at the end, screwed downand fixed on the ruler body, not easy to fall off and easy to carry. Widely Used Speed Square: Multi-functional folding triangular ruler for woodworking, can draw 45-90 angle, balance line, vertical line, and draw equidistant center point and knob positioningadjustable corresponding to all the intersection points of the drawn line and the edge are equidistant. To draw slopes, chamfer the ends of the roof rafters and open the beaks.