Aluminum Alloy Material: The carpentry square is made of aluminum alloy, which has excellent corrosion resistance and easily forms a dense oxide film on the surface, thus protecting the internal material from corrosion. Aluminum alloy has low density but high hardness, so it is not easy to deform. It is harder than pure aluminum and is not easy to bend or deform. Double-sided laser engraving: The product adopts double-sided laser engraving, and there are scales on both sides, which you can use at will. Laser engraving can engrave the size data on the ruler to form a depression. Compared with the scale formed by printing technology, this method is less likely to wear out during use. And laser engraving is clearer and easier to identify. INTIMATE DESIGN: The product has many intimate designs. For example, it has two scales, metric and imperial. You can choose the appropriate scale according to your usage habits. And the smallest scale of the product is in mm and inches. The unit is small and your measurement will be more accurate. In addition, the product also comes with a spirit level. You can judge whether the angle is accurate by observing the position of the bubble in the bubble. Wide Application The angle ruler is widely used in daily work and daily life. It can easily mark and measure right angles, which can help you in inspection, calibration and alignment. It is a great helper in technical construction, artisanal manufacturing or woodworking, and an indispensable measuring tool in the toolbox of every architect, handyman or craftsman. Product packaging: When you open the package, you will receive an aluminum alloy woodworking square with a 300mm/11.81 inch long side and a 156mm/6.14 inch short side and a marker. You can choose the quantity of product according to your daily needs, or give it to your family, friends or colleagues. It will be a good gift and bring comfort to their life.