1Useful Ruler: This triangle ruler can be used to measure angle and length, and the level base makes the drawing much easier. 2Clear Scale: Laser marking brings clear scale with high accuracy, which also enables convenient angle and length conversion. 3Exquisite Craft: Both the edge and corner are polished, so the thickened carpenter square is too smooth to hurt your hands. 4Aluminium Alloy: Made of aluminium alloy, wear resistant and corrosion resistant, has high hardness and good durability. 5Easy Carrying: Comes with a light weight and a compact size, the carrying is as convenient as storage, making DIY simpler. Item Type: Triangle Ruler Material: Aluminium Alloy Function: Aluminium Alloy Triangle Ruler Colour: Black Marking Method: Laser Marking Side Length: Approx. 262 x 185 x 185mm or 10.3 x 7.3 x 7.3in Thickness: Approx. 4mm or 0.2in 1 x Triangle Ruler Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.