Since 1952, TOPS has provided quality products and services to businesses throughout the world. TOPS continues that commitment providing innovative, high quality value-added paper products for the office, school and home. TOPS Computation Books are designed to help the busy professional record projects and work in process. Heavy buff paper will stand up to heavy use and erasures and the strong double wire binding keeps sheets secure. The numbered pages make it easier to index projects for future reference. These books are quadrille ruled, with 4 squares per inch, and the sheets measure 11.75 x 9.5 inches. Whether it"s a multi-part form, notebooks, writing pads, record books, or any of the hundreds of items we offer, you can count on TOPS products to help!