Precise 90degree angle guidance for measuring and marking corners in building, floor laying, and furniture making. Professionalgrade versatility: suitable for architects, engineers, and carpenters, and a solid addition to any enthusiast toolkit. Durable aluminum construction with a distinctive color for easy identification among tools, designed for longlasting use. Innovative design with predrilled pivot holes to secure placement and ensure consistent measurements across a range of applications. Benefits at a glance: improves measurement accuracy, reduces rework, and streamlines workflow in layout and assembly tasks. Key attributes Function: 90degree protractor combined with a miter rule for accurate angle assessment. Material: Aluminum for durability and lightweight handling. Angle: 90 degrees. Compatibility and applications: Ideal for measuring and marking corners during construction, flooring installation, and furniture fabrication projects. Performance: Durable, easy to read, and colorcoded for quick tool identification. Use scenarios Onsite framing or trim work: accurately measure and mark corner joints to ensure square cuts and precise assembly. Floor installation: align and verify 90degree corners for clean, consistent edge lines along walls and baselines. Cabinetry and furniture making: create precise square joints and miters for frames, boxes, and panels, reducing guesswork and rework.