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. When 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, tighten the 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 Square: Preciva carpenter squares are made of high quality aluminum alloy, matte black finish to prevent glare, corrosion resistance and good oxidation resistance, not easy to break. Stainless Steel Needle Square Joiner 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 on the end, screwed and fixed on the ruler body, not easy to fall off and easy to carry. Widely Used Speed Square: Folding triangle ruler multi-functional for woodworking, can draw 45-90 angle, balance line, vertical line, and draw equidistant center point and adjustable positioning knob corresponding to all line intersection points drawn and from the edge are equidistant. For laying out slopes, chamfering roof rafter ends and opening beaks. Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received.