Machinery's Handbook Pocket Companion" is designed for anyone in the machine trades for whom convenient access to just the most basic data is at a premium. Extremely concise yet authoritative, this invaluable tool draws on "Machinery's Handbook's" wealth of tables, charts and text. Much of the subject matter has been reorganized, distilled, or simplified to enhance its usability and to keep the bulk down. Both practitioners and students will find the Pocket Companion to be convenient ready-reference to keep nearby while working on the shop or factory floor or learning the fundamentals in the school lab. The visual design and carefully organized presentation of data encourage frequent and easy use, helping to save time and labor. This title facilitates immediate application of fundamental and reliable data. It serves as a handy and portable complement to "Machinery's Handbook" vastly larger compilation of data, standards, and text.