This ABS woodworking square ruler is a high-precision measurement tool with clear engraving metric scales. It features a 3D miter angle measuring tool with angle scale and 9 different drill bit fixing holes, allowing for accurate measurement and marking of specific angles on wood. The ruler is wear-resistant, antioxidation, and durable due to its industrial-grade ABS material and superb craftsmanship. It is widely used in making furniture, home DIY, woodworking, and professional use, and can quickly build a standard dovetail shape on wood. The product size is approximately 21.5*7.2*6cm/8.46*2.83*2.36in.