Tinsmith's Helper and Pattern Book: With Useful Rules, Diagrams and Tables

The aim in preparing this little manual has been to make it a guide for the apprentice, journeyman and master sheet metal worker. To this end the author collected everything of value on the subject and then boiled it down to a well arranged series of simple problems on the different phases of pattern drafting which the mechanic has to puzzle over daily. The section on Mensuration will be found both accurate and complete and the rules and examples are reduced to the plainest language so that...