Thick aluminum alloy ruler body - Durable and rigid construction that resists impact and wear for long-term use. Corner base - Aluminum alloy corner base enables mobile multi-directional measurement from corners, useful in tight spaces and on irregular shapes. High-precision, integrally formed design - The ruler body is made from high-quality aluminum alloy and processed with laser technology for high precision. - Integrally formed construction ensures no rust and no deformation over time. Material and performance - Material: aluminum alloy - Finish: integrally formed - Rust-proof and deformation-free for reliable measurements Use scenarios - Woodworking and cabinetry: measure and mark inside and outside corners for frames, doors, shelves, and drawers with consistent accuracy. - Metal fabrication and assemblies: layout and verify right angles on brackets, housings, and fixtures using the corner-multipoint measurement capability. - Home improvement and interior design: align picture frames, furniture reinforcements, and corner-based layouts with stable, repeatable results.