Discover the invaluable uses of the craftsman's mainstay - the steel square. This is a clear & helpful reference book. It is ideal for the carpenter, woodworker & DIYer.Now, any carpenter, woodworker, or serious do-it-yourselfer can discover how invaluable the simple steel square can be in building stairs, roofs, rafters and practically everything else. With clear illustrations and charts, simple rules of thumb, and skill building exercises, this clear and helpful reference will unlock the secrets of a time-honoured tool that's been a mainstay in the toolbox of skilled craftsman for centuries.