Features: Brand new and high quality Contains a triangular ruler and a set of angles, and a pencil with 12 refills of different color, which can be used for different objects. The combined square is a perfect tool for accurately measuring and marking objects to meet different need. The total length of the triangular ruler is 18cm, and the measuring range is 0-90degree. It can also draw holes with horizontal line and the diameter is 3 to 15mm, which is convenient for drilling quickly and easily. It can also set notches and draw circles to mark the drawing board. The measuring length of the combined adjust square ruler set is 30cm, and 45degree can be measured. The nut at the top is adjust and can moved at will, making the measurement more convenient. Selected from aluminum alloy, it have hardness, corrosion resistance, effectively prevents reflection The measuring instrument suitable for wood marking can help angle measurement, which is a convenient and practical multifunctional measuring instrument, saving time and improving work efficiency. Specifications: Material:Aluminum Triangular Ruler: Approx.18.3x18.3x25.9cm/7.2x7.2x10inch Pencil: Approx.14.5cm/5.7inch Pen core: Approx.12.7x2.5cm/5x0.98inch Protractor:Approx. 30cm/11.81inch Package Includes: 1 Set Square Ruler note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.