Always have a ruler handy in your pencil case with this Bibbidi-Bobbidi-Boo Ruler, with a funky music note design. Measuring up to 20cm, this acrylic ruler features a transparent, three-dimensional design with centimetres and millimetre measurements.Ideal for marking, underlining and measuring, this cool ruler is sure to add some style to your pencil case. . Acrylic ruler 20cm. Music notes design. Transparent. Ideal for marking, underlining and measuring. Approximate dimensions (mm) H9 W210 D 9. Weight 24G