Description: Helpful Tool: This Acrylic Seal Carving Positioning Board is an ideal tool for accurately placing seal images, suitable for various art and craft projectsEasy to Position: The Transparent design makes it easy to place the seal and helps you print the image accurately where you want itSuitable for Everyone: The stamp positioning ruler is fit for students, beginners, artists, calligraphers, and home and school art activitiesQuality Material: The stamp coloring board positioning ruler is made of premium acrylic material that is sturdy, wear-resistant, and lightweightMultipurpose: The seal positioning ruler is great for creating straight borders, designing scenes, practicing calligraphy stamp letters, shading images or even re-stamping images that didn't leave a strong impression Specification: Material: Acrylic Color: Clear Size Chart: L-shaped Ruler: 8cmx12cm/3.15inchx4.72inch T Shaped Ruler: 12cmx10cm/4.72inchx3.94inch G-shaped Ruler: 4.45cm/1.75inch Diameter Square Ruler: 15x15cm/5.91inchx5.91inch Package Includes: 4x Stamp Positioning Ruler Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!