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What is GD&T?

Geometric Dimensioning and Tolerancing (GD&T) is a system for defining and communicating engineering tolerances and relationships. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models that explicitly describe nominal geometry and its allowable variation.

Our GD&T training classes can be held on-site at your facility or through our live, virtual training.

With our on-site training, we bring the expertise directly to your team, in the comfort of their environment.

Through our virtual training option, you get expert instruction thru real-time web conferencing with the instructor available 100% of the time the training is provided.

Choose from these Geometric Dimension & Tolerance courses:

GD&T Fundamentals

Beginners GD&T

  • Symbols and Terminology
  • Limits of size
  • How the Geometric System Works
  • The Datum Reference Frame
  • Orientation Tolerances
  • Form Tolerances
  • Profile Tolerances
  • Position Tolerances

Advanced GD&T

Advanced GD&T

  • Product Plans & Position Verification
  • Virtual Condition & Boundary Modifiers
  • Datum Targets
  • Fastener Formulas
  • Composite Tolerancing
  • Advanced Datum Reference Frames
  • Coaxial Control Comparison
  • Tolerance Stacks Introduction
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