The Adjustable Carpentry Square Protractor is designed for professional woodworkers, craft enthusiasts, and international project managers who require standardized measurements for crossborder construction or home renovation workflows. Halfcircle design combines a scribing ruler with clear measurements and 0180 degrees adjustable angles, providing stable, errorresistant layout tasks across multiple fronts. Precisionengineered 180degree quick marking guide, crafted from solid aluminum alloy for longterm accuracy in woodworking projects. Seamless conversion between layout, measuring, and angle replication tasks, built with corrosionresistant aluminum alloy construction to outperform traditional protractors. Built for durability and reliable performance in everyday woodworking, layout work, and angle transfer tasks. Easy to use across projects that demand consistent references, with a design that supports accurate marking and transfer of measurements from plan to cut. Use scenarios Cabinetry, furniture, and frame work: use the halfcircle scribing ruler and 0180 degree range to lay out miters and joints with repeatable accuracy for drawers, cabinets, frames, and shelves. Renovation and trim installation: transfer exact angles and layout lines for crown molding, baseboards, window and door casings, and other finishing work to achieve tight, clean joints. Crosssite or crossborder projects: provide a shared measurement reference for teams working across sites or countries, reducing miscommunication and ensuring consistent layout and angle results.