30cm Music Ruler – White with Black Manuscript A practical 30cm music ruler designed for students, teachers and music enthusiasts. The white ruler features black manuscript notation, making it easy to use when working with sheet music, notation exercises and music theory. Product Details Product: 30cm Music Ruler Colour: White Design: Black manuscript/music notation Length: 30cm SKU: 708010446 Suitable for: Piano students, music students, teachers and music classrooms Ideal for: Music theory, manuscript work, lessons and everyday school use A useful and inexpensive accessory for any piano student or music theory student.