This practical "how to" text book was written by a contractor who realized his crew was lacking math skills, and wanted to teach them a common sense approach to applying basic math skills to the job. This book illustrates how problems relate to practical applications, as well as squaring, leveling and lay out techniques, conversion problems, descriptive geometery, illustrative trigonometry and many other "tricks of the trade". A great reference book for all tradesmen, apprentices and do-it-yourselfers. Soft cover. 406 pages.