Tally Books are used in many industries such as oil fields, pipe lines, cattle ranches and all kinds of other professions. They are used to keep count and records of things and are specifically designed to be slender and tall so that they can fit in a pocket yet hold a lot of information. This Tally Book is 3.25" Wide and 5.5" Tall when closed. It fits beautifully in our Western cut Field Notes template.