Rule life with our handy Polycarbonate Double-Sided Ruler, designed to fold in half so you can easily store it in your pouch or pocket. You can measure or use as a guide for writing lines when folded and extended. Please note: this ruler includes centimeter measurements only. When folded, measure with a length up to 5.9" (15 cm). When unfolded, measure with a length up to 11.8" (30 cm).