Cliths Ruler Set for Drawing Spirograph Design and Easy Circles Precision Geometry Tool for Artists Students EngineersUnlock your creativity with the Cliths Ruler Set, designed for precision drawing, spirograph art, and geometric designs. Perfect for artists, students, and engineers, this 8 inch (20. 32 cm) ruler ensures accuracy and ease of use. Dual Measurement Scale Features both inch and centimeter markings (8 inch 20. 32 cm) for versatile applications in drafting, school projects, and crafts. Good quality Pine MDF Build Made from 2. 7 mm thick, high quality pine