Crafted from aluminum alloy, this measuring tool features foldable designs and centimeter scale, ensuring durability and precisely measurements for professional drawing tasks The folding aluminum alloy ruler with clearly marking and ergonomic grip, while folding compactly to 30cm for portability in pencil case, school bag or drawing toolkit Suitable for students, and engineers seeks multipurpose drawing tool for academic project, technical drawing, or professional engineering drawing adapts to classroom, home studios, or construction sites, engineering drafting, school geometry classes, while accurately measuring result in educational or industrial setting Engineered with reinforced joints and surfaces, this folding metal ruler maintains structural integrity through repeated use in demanding environment like construction sites or art studios