Features designs, light weight construction, rustproof and break resistance for long time durability adapts to classroom, home studios, or construction sites, while accurately measuring result in educational or industrial setting Crafted from aluminum alloy, this multifunctional ruler combines durability with protective edges, suitable for precisely measurement and engineering drafting Suitable for students, and engineers seeks multipurpose drawing tool for academic project, technical drawings, or professional engineering drawing Engineered with smoothly edges and matte black finish, this aluminum alloy ruler elevates functionality while maintaining professional aesthetic for daily tasks, Manufacturer: JunsenF