Woodworking Protractors Ruler is a multifunctional device for length measurement and angle drawing. Key benefits Combines length measurement and angle drawing in one tool, reducing the need for multiple instruments. Easily measure lengths and draw parallel lines at different angles and intervals, speeding up layout and setup. An indispensable tool for woodworkers and mechanics to improve accuracy and consistency. Core features Function: length measurement and angle drawing Simple operation: align the exterior edge of the disc with the edge of the board, then rotate the ruler to the desired angle Versatile for woodworking and mechanical projects Supports drawing lines at various intervals and angles with reliable results How to use Place the outer edge of the disc against the edge of your workpiece Rotate the ruler to set the target angle Mark or transfer the angle and parallel lines as needed Use scenarios Scenario 1: Layout cut lines and angles when building a cabinet or furniture frame Scenario 2: Mark parallel lines and miters for drawer fronts, panels, or trim Scenario 3: Transfer precise angles during mechanical assembly or metalworking projects