Made of high quality aluminum alloy, corrosion resistant and durable, not easy to break Can be used as a protractor, line scriber, saw guide, tri-meter square and multifunctional ruler Ideal tool for framing, roofing, construction and renovation projects The lip edge can be used for secure location Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.