Young, fresh, fashionable and very, very practical. The magnetic application allows fixing the pencils in the most unusual places. Magnetic Pencil with the Ut queant laxis of Guido d’Arezzo. The use of Ut queant laxis to name the tones is usually attributed to Guido of Arezzo in the eleventh century, who proposed a name the tones of notes. Dimensions: ↔18cm Ø6,9mm | Color: Black