1、[CARBON STEEL MATERIAL] Triangle ruler made of carbon steel, durable, high hardness, corrosion resistance, the surface has been polished many times, smooth and does not hurt the hand, easy to carry. 2、[CLEAR SCALE] The triangular ruler has precise and clear scales and permanent markings for easy readability and long term use. 3、[EASY TO READING] The user can easily support the triangular ruler flush with the wood, and the embedded magnets have good suction for easy reading. 4、[MULTIPLE USES] Ideal for marking squares and 45 degree lines, protractors, framing squares, triangular squares, and marking horizontal bases, the triangle Ruler is the ideal companion for woodworkers and builders. 5、[HIGH ACCURACY] The woodworking square provides precise measurements, marking the finest millimeters, for your woodworking work.