[High Quality Material]: carpenter's square is made of aluminum alloy, the surface is matte black, which prevents reflections, carpenter's protractor has corrosion resistance, is durable and is not not easy to break. [Multiple functions]: triangle ruler can be used as protractor, miter, saw guide, line marking, three meter square, frame square and ruler. [High Precision]: large quick carpenter's square has metric and inch measurements, the scale is clear and precise, with a 0-90 scale, a stamped inch scale and a regular conversion table, easy to measure and read. [Easy to Use]: Suitable size of metric carpenter square: 30x30x43cm /12.0x12.0x17.0 in, medium size and clear size for easy drawing. [Applications]: 1pcsx12 in aluminum carpenter's square can meet the needs of hobbyists, home builders, manufacturers, DIY enthusiasts and artists, as well as woodworking. This metric triangle square is composed of an aluminum alloy. It therefore has a very thick extruded aluminum body which offers stable grip and great resistance to loads. Ideal as a saw guide, it is easy to use for all construction and renovation projects. This metric triangle square features a metric scale measurement and an inch scale measurement The scale line is clear and precise. Features: Size: 30x30x43cm / 12.0x12.0x17.0 in. Material: aluminum alloy, matte black surface. Color: black. Package includes: 1x Aluminum alloy ruler square.