Usage Tips:- Achieve unmatched precision in your panel layout tasks with our edge ruler. Simply position the head at your desired angle and press down to draw a straight line effortlessly.- The adjustable head allows for angles between 0° and 70°, locking securely every 5° (including 22‑1/2° and 67‑1/2°). This feature provides accurate reference angles and lengths for all your projects.- Equipped with laser-etched scales, the ruler surface is clear and intuitive, making readings easy and reducing parallax errors. This design enhances your measurement experience.- For convenience, place your pencil in the designated notch and glide the pen tip along the barrel edge to create perfectly parallel lines.- Each edge of the ruler blade features a 1/32 inch scale, with a cumulative error tolerance of just 0.004 inches, ensuring consistent accuracy in your measurements.- Ideal for a variety of applications including engineering, angle measurement, architectural design, and student drawing. Perfect for carpenters, architects, designers, and students who require reliable tools for their work.