The standard reference work for the mechanical industries. It makes available in clear, concise, ready-to-use form the new and hard-to-get as well as the established standard data and information needed by machine designers, shop management, skilled mechanics, engineering students and students in shop training courses. an invaluable aid and working tool wherever anything mechanical is designed or constructed. The latest edition of this world-renowned book combines all the valuable features of earlier editions with the most recent and most useful machine-designing and machine-shop data obtainable It contains over 2100 pages of mechanical tables, rules, formulas and general data. Any one of the thousands of items in the various sections may readily be located by referencing the very complete index.