Ronald A WalshRonald A. Walsh is one of McGraw-Hill's most successful writers. An electromechanical design engineer for more than 45 years, he wrote Machining and Metalworking Handbook, Second Edition, Electromechanical Design Handbook, Third Edition, and is the c-author of Engineering Mathematics Handbook, Fourth Edition, all published by McGraw-Hill. Former director of research and development at the Powercon Corporation and the holder of three U.S. patents, he now consults widely from a base in Upper Marlboro, Maryland. Read More Read Less