Ukulele, Bass & Mandolin Fretboard Rubber Stamp (Uke Ukelele) This professional quality Bass, Ukulele, and Mandolin Fretboard Rubber Stamp is a great time saver for teachers, students and composers alike! Simply stamp in an empty template of your instrument on a score or notebook and fill in the desired fingerings with a pen or pencil. Think of the time you'll save! Laser Engraved 1000 dpi rubber Dimensions: 3"' x .5'' Durable Wooden Handle Great for teachers and students!