Perfectly adapts to furniture assembly, home renovation, metalworking, and architectural drafting scenarios where multi angles verification and rapid layout marking are essential Its foldable L shape design with hanging hole combines portability and workspaces efficiency, while the 2mm thickened ruler body resists deformation during heavy duty use Features include a built in marking pin for storage, anti slip screw for edges alignment stability, and perforated guide holes enabling parallel / vertical line marking with millimeter levels precisions Crafted from premium aluminum alloy, this L shaped folding angles ruler 15° increment and 330° rotation for accurate angles measurement, marking, and layout tasks with clear scale ensuring long lasting clarities Ideal for professional like carpentry, engineers, and DIYer enthusiasts requiring measurement tools for workshop projects or outdoor construction applications, Manufacturer: NVOQILIN