With Sonic's Nobirura, you have two rulers in one: it is a 16 cm (6.3 inches) ruler that extends to become a 30 cm (11.8 inches) ruler. In its compact 16 cm form, the ruler conveniently fits in your pencil case. The clip lets you clip it to your notebook and papers, and it serves as a handy bookmark. Once extended to its long form, the ruler is long enough to draw straight vertical lines down an A4-size page. Extending the ruler is easy and smooth—simply grip the clip and slide it out until it snaps into place. The name "Nobirura" conveys this unique feature, by incorporating "nobiru," the Japanese word for "extends". The ruler is not only functional, but is aesthetically attractive, made of transparent acrylic and coordinating plastic.