The AdirPro Hardcover Transit Book is what every surveyor needs while conducting fieldwork. Our leather-bound transit book will not disappoint as it is made of water-resistant cotton content ledger paper, excellent for logging your daily activities. It is designed to withstand rugged conditions under various climate situations with a water-resistant leather cover and waterproof red and blue inked lines. Located within the transit book is an appendix of tables of conversions, trigonometric functions, and formulae for solving right angles and curves. The leather-bound cover is a high visibility yellow making it convenient to locate when needed. Each box contains six transit books, so you can keep them in your car, in your safety vest, and in your carrying cases so you will never be without one.