Composer Template Ruler Convenient and versatile: Covers a wide range of commonly used music symbols, serial numbers, key signatures, rhythms, and more, enabling you to create professional sheet music quickly and effortlessly. materials: Made from durable 1 mm thick PP material, the ruler is lightweight and easy to handle, providing clear and accurate markings for precise results. Dual scales for accuracy: Features millimeter and inch markings for music notation and everyday measuring tasks, making it a handy tool for musicians on the go. Ideal for music enthusiasts: Suitable for composers, music teachers, students, and anyone passionate about music, offering a convenient way to sketch ideas and experiment with harmonies. Use scenarios: In composition sessions to lay out symbols, rhythms, and key signatures on your score template. In teaching or practice settings to illustrate notation, scales, and rhythm values for students. While traveling or rehearsing to make quick measurements and annotate ideas on the go.