Made of lightweight acrylic, the National Geographic 2x Magnifying Glass Ruler is a handy tool for reading tiny lines of text or data in magazines, manuals, spreadsheets and more. The ruler portion of this magnifying device is 12 inches in length and features a red center guideline that makes it easy to focus on a particular line of text or data. The device, which is 1.125 inches wide, is slender enough to fit easily into a desktop drawer or backpack, and it comes with a slip-on sleeve for protection while in storage or transit.