The only book to unlock the secrets of this valuable time-honored tool. With hundreds of illustrations, rules of thumb side-bars, skill-building exercises, and clear, practical advice, this book will show you how indespensible the steel square can be in building stairs, rafters, roofs and so much more.

Ken Horner is a retired organic chemist and computer consultant who resides in Sunnyvale, California, deep in the heart of the Silicon Valley. A veteran woodworker, he is a member of the South Bay Woodworkers Association.

Essential Guide to the Steel Square, by Ken Horner is a valuable reference for woodworkers, carpenters and builders who want to learn how to use the steel square, and offers hundreds of charts, illustrations and step-by-step exercises. The easy-to-understand guide illustrates how the steel square is used as a calculator to quickly solve hundreds of mathematical problems that builders, carpenters, roof rafters and woodworkers are faced with each day. Examples include determining board feet, figuring the bracing for post and beam construction, or changing hundredths of an inch to fractions. With clear illustrations, diagrams, skill-building exercises, and simple rules of thumb, this handy reference will show readers how indispensable the steel square can be in building stairs, roof rafters and more.