One pack triangle ruler: It can be used directly with the saw against the square for cross cuts or angled cuts using the etched protractor scale, let you quickly mark your cut lines on your stringers Two measurements: Features metric and imperial measurements with clear graduation, embossed imperial graduations and common rafter conversion table, the squares is convenient for measuring and read High quality: Made of high-grade aluminium alloy with matte finish to prevent glare, with clear and accurate scale, convenient to read value Function: The triangle metric ruler can be used as a protractor, miter, line scriber, saw guide and tri/meter square, framing square and a ruler, ideal for all building and remodeling projects Multi-purposes: It's suitable for all building and remodeling projects, also hobbyists, home builders, manufacturers and artists