[Foldable Triangle Ruler] telescopic square can increase the measurement distance after opening, save storage space when folded, easy to carry; 6 inches (about 15 2 cm) folding extension arm does not need 7 inches (about 17 8 cm) and 12 inches (about 30 5 cm) cm) square [Adjustable positioning tool]You can freely choose the angle, after adjusting to the desired angle, tighten the nut for positioning, press the middle rod to achieve precise positioning; a variety of measurement functions, suitable for different scenarios [High Quality Woodworking Square]Folding triangle ruler is made of high quality aluminum alloy, black matte surface, anti glare, corrosion resistance, durable, not easy to break There are no sharp edges at all that won't hurt your hands [Embedded Strong Magnets]Embedded strong magnets secure the extension arm, easy to open and fold without shaking, durable, perfect tool for framing, roofing, construction and reconstruction projects [Multifunctional Square Ruler]This folding square is equipped with a hidden stainless steel scraper, with a thread at the end, which is not easy to fall off after being screwed and fixed on the ruler It can be used as a protractor, wire pliers, saw guide and triangle square ruleColour:As shownMaterial:MetalPackage Contents:1 set x triangle rulerOnly the above package content, other products are not included Note: Light and different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is +/- 1-3cm