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.
Sonic Nobirula 16<->30 cm Retractable Ruler - Clear Pink
Sonic Nobirura 1630 cm Extendable Ruler - Clear Blue
Sonic Nano Pita Non-Slip Reversible Ruler - 15 cm
Pentel Clic Eraser Grip, Retractable Eraser, Light Green Barrel
Westcott 16014 Plastic Beveled Transparent Ruler, Blue, 12 in
1pc Japan Acrylic Retractable Ruler Simple Plastic Measurement
Easy for cm/mm grading. Non removable marking especially designed at inner body of the ruler. Flexible & permanently not damageable or break.
Flexible Grader Ruler Millimeter & Centimeter Scales M111-50cm
The Original Pink Box PBC16TMHL 16-Foot Tape Measure, 12-Ounce
Westcott 16014 Plastic Beveled Transparent Ruler, Blue, 12 in : Office And School Rulers : Office Products
Sonic Nano Pita Non-Slip Reversible Ruler - 15 cm
Sonic Nobirula 16<->30 cm Retractable Ruler - Clear Blue