This handbook provides a portable, practical reference for applying the ANSI Y14.5M-1982 standards for dimensioning and tolerancing within the customary inch system. Lowell W. Foster, a recognized expert in geometric dimensioning and tolerancing (GD&T), distills complex engineering requirements into a format suitable for on-site application. The text serves as a condensed version of his comprehensive work, Geometrics II, specifically designed to assist mechanical, design, and drafting engineers in interpreting and applying technical specifications directly on the manufacturing floor.

Engineers and manufacturing professionals frequently cite this text as a highly functional, portable resource for quick verification of GD&T standards. Experts recognize Foster's work as a foundational reference for those operating under the 1982 ANSI specifications.