Woodworking protractors ruler is a multifunctional device for length measurement and angle drawing. Multifunction and practical value: Measures lengths and draws angles, making it useful for a variety of layout tasks in woodworking and mechanical work. Convenient and timesaving: The ruler can measure lengths and draw parallel lines at different angles and intervals easily, providing clear workflow benefits and improved efficiency. Woodworker tool: An indispensable tool for woodworkers and mechanics, designed to support common fabrication and layout tasks. Simple operation: Align the outer edge of the disc with the edge of the board, then rotate the ruler to the desired angle for quick and accurate angle setting. Applications Cabinet, frame, and furniture layout: mark parallel lines and reference angles for accurate cutting and assembly. Molding and trim work: establish consistent angles and offsets when fitting trim pieces or bevels. General mechanical layout: set reference angles and measure lengths on metal or wood components to aid drilling, cutting, and fitting tasks.