GD&T Overview - 1 Hour (300-00-149)

Need a fast, practical introduction to the language of geometric tolerancing? GD&T Overview (1 Hour) is a concise session that walks through core GD&T ideas and their impact on the full product lifecycle. In one hour, you’ll get a clear picture of how traditional plus/minus dimensioning falls short and how GD&T helps teams communicate requirements in a way that supports functional parts and consistent verification.

This overview is ideal for engineers, designers, quality and manufacturing teams, buyers, and anyone who needs to understand how drawing requirements influence downstream decisions. You’ll review key concepts such as features and features of size, foundational GD&T rules, and the role of datums, datum features, and the datum reference frame in evaluating parts.

You’ll also cover the basics of form, size, orientation, and location controls, plus a high-level look at geometric tolerancing and what it means for inspection requirements and supplier communication.

Because this is an overview, the goal is not to turn you into a GD&T power user in a single sitting. The goal is alignment: giving you and your team a shared vocabulary and a common baseline so conversations about requirements are clearer, faster, and less dependent on institutional knowledge.