Practical Sheet Metal Layout: Fittings Used Today That Require Triangulation 4th Edition

Contains step-by-step instructions for laying out the patterns for fittings that require triangulation. Also contains 62 pages of trade information explaining the theory of triangulation, making the layout of these fittings easier to understand. Much of this information has never been published before and in the past could only have been learned by observing other workers. The purpose of this handbook is to provide the sheet metal industry with a practical approach to laying out the fittings used today that require triangulation. It eliminates the fear or mystery which often accompanies the term ?triangulation.?