The Ruler Pad isa scale ruler, protractor, character size reference, line width chart, and grid templates all-in-one. The upper right corner has a protrusion that is designed to be an index tab so you can quickly access the page you need even after closing the ring leather binder. The keyhole ring design makes it easy to remove and reposition wherever you like. Enjoy a wide variety of scales and line width guides to assist your creative work. See All Plotter A5 Binders and Refills Specifications Body / Made of PP resin A5 – Body size / H8.4\” W5.8\” (213mm X 147mm) Bible – Body size / H6.8\” W3.7\” (172mm X 93mm) Country of origin / Made in Japan