MATHEMATICS FOR THE AVIATION TRADES by JAMES NAIDICH. Originally published in 19I2. PREFACE: This book has been written for students in trade and technical schools who intend to become aviation mechanics. The text has been planned to satisfy the demand on the part of instructors and employers that mechanics engaged in precision work have a thorough knowledge of the funda mentals of arithmetic applied to their trade. No mechanic can work intelligently from blueprints or use measuring tools, such as the steel rule or micrometer, without a knowl edge of these fundamentals. Each new topic is...