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Geometric Dimensioning and Tolerancing (GD&T) is a standardized system used to define and communicate engineering tolerances, ensuring that parts and assemblies fit and function as intended. Unlike traditional dimensioning, GD&T focuses on the geometry and relationships between features, which enhances design flexibility, quality control, and the interchangeability of parts. In this post, we explore the fundamentals of GD&T, its importance in manufacturing, and how it improves communication and precision in engineering designs.