Description Multi-function: the triangular metric ruler can be used as a protractor, miter, line scriber, saw guide and three meter square, as a frame and as a ruler, ideal for all construction and renovation projects Size: 26cm*18.5cm*18.5cm High quality: The carpenter square is made of high quality aluminum alloy with a matte black finish to prevent glare, corrosion resistant and durable, not easy to break Suitable for: triangle engineer protractor useful for hobbyists, home builders, fabricators, artists High Precision: Its thick cutting edge can be used directly with the saw against the square to make cross or bevel cuts using the engraved protractor scale, allowing you to quickly and accurately mark your cutting lines on your silts More details: 7'' Aluminum Rafter Angle Solid aluminum body with machined edges for increased precision and durability Specifications: File type (optional): metric system Material: aluminum alloy Black color Size: 26x18.5x18.5cm included: 1 x protractor(Black)