Drilling practice and jig design a treatise coveringcomprehensively drilling and tapping operations, and the design of drill jigs and fixtures for interchangeable manufacture This book, "Drilling practice and jig design", by Erik Oberg, F. D. Jones, is a replication of a book originally published before 1915. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.