This book, "Machine design a manual of practical instruction in designing machinery for specific purposes, including specifications for belts, screws, pins, gears, etc., and many working hints as to operation and care of machines. 2", by Ernest L. Wallace, is a replication of a book originally published before 1918. 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. This book was created using print-on-demand technology. Thank you for supporting classic literature.