Our ruler is made of thick plastic for durability and flexibility. It is lightweight and easy to handle, ideal for musicians on the go. Our five-line staff and Malstab ruler meets all your notation needs. It covers a wide range of commonly used music symbols, including serial numbers, key signatures, rhythms, clefs, and accidentals. The edges feature millimeter and inch markings, so it doubles as a practical daily measuring tool as well as a notation instrument. Our composer template is an indispensable tool for composers, music teachers, students, and anyone who loves music. Use scenarios: - Draft scores on the road or in the studio to align notation precisely. - Teach music theory and notation by illustrating keys, rhythms, and symbols with accuracy. - Annotate manuscript pages or prepare lesson materials and rehearsal notes quickly and consistently.