Adjustable Combination Square: This product consists of a 300mm steel ruler and an adjustable square head. Suitable for marking 45/90-degree angles, multi-dimensional measurements, marking straight lines, and drawing parallel lines. Accurate Measurement: Adopts laser technology for high-precision production, the engraving number calibration is clear and easy to read. Double-sided centimeters and inches: 300mm metric system and 30.5cm imperial system. Meet your various measurement needs. Multifunctional: With a built-in spirit level and metal tip, the combination square can be used as a set square, depth gauge, metal tip, and spirit level. It is the perfect assistant for carpenters, engineers, and carpenters. Durable Material: The ruler is made of high-quality stainless steel. The corner bracket is made of zinc alloy, which is rustproof and corrosion-resistant, not easy to deform, sturdy and durable.