This Angles protractor and marking woodworking ruler is designed to improve accuracy and efficiency in layout and marking tasks. Key benefits Precise angle drawing: Draw angles from 0 to 180 degrees with 1degree increments and an accuracy of ±0.5%. The ruler body helps indicate the angle while you draw. Clear dualscale readings: Doublesided engraving provides clear markings in both centimeters and inches for quick, easy reading. It also enables fast vertical line marking based on a specified distance. Versatile for many tasks: Ideal for woodworking projects (mortises and tenons joints), mechanical processing, architectural drafting, general project layout, and construction drawings. Use to mark angles, draw lines, and layout angles accurately. Portable and easy to carry: Small size and light weight make it convenient to take to the workshop, job site, or classroom. Specifications and features Angle range: 0 to 180 degrees Increments: 1 degree Accuracy: ±0.5% Markings: Engraved on both sides for centimeters and inches Function: Mark angles, draw lines, and establish vertical references based on distance Design: Compact, lightweight woodworking ruler suitable for onsite use Use scenarios Woodworking: Layout mortises and tenons with precise angles and quick vertical distance references on the workpiece. Drafting and construction: Transfer and mark exact angles in architectural plans or mechanical drawings, and lay out layout lines on projects. General layout: Quickly mark angles and straight lines for assemblies, project planning, and onsite measurements. This description maintains the original product's scope and functions, presented in clear, customerfriendly language to support informed decisions.