The heavy duty metal construction maintains perfect geometry under pressure, combining graduations and double purpose edges for both measurement and precise line marking tasks clear metric / royal scales remain in low light conditions, while the lightweight yet rigid design enables effortless portability in tool belts or workshop drawers Accuracy engineered aluminum triangle ruler with integrated angles marking square ensures accurate 90° and 45° measurements, featuring strong anodized surfaces that resist scratches and erosion Perfect for layout tasks in construction site, woodworking shops, or home renovation projects where stable measurement tools are vital Ideal for professional carpenter, workshop technicians, and enthusiasts requiring stable dimensional accuracy in demanding projects, Manufacturer: YIGZYCN