The New Metal Worker Pattern Book: A Complete Course of Instruction in the Modern Methods of Developing and Cutting the Patterns for Sheet Metal Work, Giving the Principles Underlying Practically Every Problem that is Likely to Come Up in Practice and Explaining the Selection and Use of Drawing Tools and Linear and Geometrical Drawing So Clearly that One, who Has Had No Previous Knowledge of Arithmetic Or Drawing, May Understand These Essentials and Apply Them in Using the 253 Problems in the Development of Patterns by the Parallel Line, Conical Or Flaring, and Triangulation Systems