For centuries, the steel square has been a mainstay in the toolbox of skilled craftsmen. In the hands of someone who knows how to use it, this simple tood can quickly solve countless construction and geometric problems involving angles, arcs, circles, and squares. Now, with the help the Essential Guide to the Steel Square and Ken Horner, author of the best -selling Woodworker's Essential Facts, Formulas, & Short- Cuts series, anyone can unlock the helpful secrets of this valuable, time-honored tool. With 17 chapters packed with hundreds of clear illustrations and diagrams, skill-building exercises, and simple rules of thumb, this handy reference will show any curious carpenter, woodworker, or serious do-it-yourselfer how indispensable the steel square can be in building stairs, roofs, rafters, and practically everything else.