HIGH-QUALITY MATERIALThe square ruler is made of high-quality stainless steel, which is corrosion-resistant, does not rust or deform easily. The corner frame is made of aluminum alloy, with fine workmanship and stronger resistance to falling and wear. Features a shatter-proof electrophoretic coating to withstand use in the harshest environments. MULTIFUNCTION SQUARE Built-in bubble level, you can quickly and accurately measure the level status, perfect for measuring 90 degree angles and 45 degree miter angles. Can be used as a square ruler, depth ruler, scriber and level to meet your different needs. PRECISE SCALEUsing a laser scale for precise positioning, achieving extremely high accuracy and readability. An angle bracket allows you to easily position the ruler flush with the wood. And it adopts double-sided double engraving, so it can be measured in any position and direction, which is convenient and quick. EFFICIENT DESIGNThe angle bracket adopts ergonomic design to reduce the pressure on your elbow or wrist when measuring and marking. It is fixed with screws for easy sliding for marking. It is equipped with a scriber for easy marking. (Note: The scriber must be loosened and removed with pliers before the first use)