As the work of the toolmaker requires a large amount of skill and refinement necessary in the modern system of interchangeable manufacture, its surprising that so little has been written on tool-making practice. This book meets a real need as it deals with a great variety of tool-room problems and explains many important toolmaking operations. It completely covers the methods and operations which are fundamental and essential to the production of small tools and precision work. It also contains many valuable mathematical rules and calculations to aid in the solution of problems so frequently encountered in the tool room. As accuaracy is essential to most toolmaking operations, an emphasis is placed on the various methods for locating, spacing and dividing precision work. Also covered in this book are lapping, bench lathe pratice, precision threading, and much more. This book is the standard treatise on the topic and will prove essential to anyone involved in the toolmaking practice.