Triangulation
Kidder, F. S. Excerpt from Triangulation: Applied to Sheet Metal Pattern CuttingThe great and increasing demand for irregular forms to be made from sheet metal has made Triangulation an important factor in Sheet Metal Pattern Development. This has induced the writer to lay before the sheet metal worker, a work designed for the purpose of enabling him to acquire a thorough understanding of this branch of Pattern Cutting.Triangulation has in many instances be...