A superb reference for professional offices in many fields: industrial technology, CAD, engineering, and manufacturing technology, among others. Encompassing the latest ANSI/ASME Y14.5M-1994 Dimensioning and Tolerancing Standard, the crystal-clear presentation breaks the topic's fundamentals into small, logical units for easy reference. Fundamentals of Geometric Dimensioning and Tolerancing covers the entire gamut of the field: drawings and dimensioning, form controls, datums, tolerance of position, runout controls, and more. Perfect for a self-paced refresher course in a field vital to your career.
A solid course in GD&T which does well in introducing the hows and whys. However, it's not the optimal _reference_. If you want to know which tolerance to use, or how to apply it, there are more streamlined texts.