Features: The 3D Adjustable Carpentry Square Protractor features a accuracy engineered 180 degree quick marking guide, crafted from solid aluminum alloy for long time accuracy in woodworking projects. Its half circle design combines a scribing rulers with clear measurements and 0-180° adjustable angles, providing stable support for error resistant layout tasks across multiple fronts. Ideal for professional carpenters, DIY enthusiasts, and international project managers requiring standardized measurements for crosses border construction or home renovations workflows. Perfectly suited for framing, cabinetry, and metalworking applications where rapid angles transfers and consistent marking efficiency is critical in workshop or jobsites environment. Engineered to outperform traditional protractors with its corrosion resistant aluminum alloy construction, this multifunctional tool ensures unseamed conversion between layout, measuring, and angles replication tasks. Specifications: Material: Aluminum alloy Type:Metric/Brithish Color:Red/Blue/Black/Gray Silver Package Includes: 1Set Woodworking Semicircular Triangular rulers Aluminum Alloy Marking rulers note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.