Precision Locating and Dividing Methods is a comprehensive technical manual authored by Franklin D. Jones, designed to serve machinists, toolmakers, and mechanical engineers seeking mastery in the art and science of accurate measurement, layout, and division in metalworking and manufacturing processes. The book delves deeply into the principles and practical applications of precision locating and dividing, offering detailed explanations of the tools, devices, and techniques essential for achieving exactness in the workshop. Covering a wide array of topics, the book explores the use of surface plates, height gauges, vernier scales, and dial indicators, as well as the construction and use of jigs, fixtures, and specialized dividing equipment. It provides step-by-step instructions for laying out workpieces, transferring measurements, and ensuring repeatable accuracy in both simple and complex machining operations. The text is richly illustrated with diagrams and photographs, clarifying the setup and operation of various tools and machines, including dividing heads, rotary tables, and indexing mechanisms. Jones also addresses the mathematical foundations of dividing circles, gears, and other components, presenting clear methods for calculating divisions and spacing. The book includes practical tips for avoiding common errors, improving efficiency, and maintaining the highest standards of precision. Whether for the apprentice learning the basics or the experienced craftsman seeking advanced techniques, Precision Locating and Dividing Methods stands as an authoritative reference, reflecting the best practices and innovations of early 20th-century machine shop technology.