GD&T Fundamentals

  • Delivery Option: Public & On-Site
  • Subject Category: Technical
  • Cost: $845
  • Number of Days: 2
Course Summary

This course is an introduction to the Y14.5M-1994 and Y14.5-2009 standards, focusing on the what, when, why, and the how of GD&T.


“The training was awesome! (The instructor) did an excellent job breaking down the information to where everyone could understand it. He also got back to us (as promised) on a topic that we had more questions about. I would recommend him to any organization. Excellent Job!!!” – Peter, Maine

“This was very helpful in complementing my job. I learned a ton of useful information. Instructor was very knowledgeable and had very good classroom etiquette. Best instructor I’ve had in many classes I’ve taken over the years.” – Roger, Indiana

“Excellent refresher course, good for our whole department regardless of skill level or experience.” – Kevin, Utah

“It was a good primer on the fundamentals of GD&T. It makes much more sense now.” – Christopher, Minnesota

“Good base understanding of a critical design language all design/engineering/manufacturing/quoting/quality professionals should know.” – Brandon, Minnesota

“I learned more in this course about GD&T than I did in college.” – Jonathan, Wisconsin

Target Audience

This program is designed for anyone who designs, drafts, engineers, purchases, manufactures, estimates, or inspects parts and assemblies. Particular emphasis is placed on those who design and manufacture, and those responsible for quality.

A working understanding of technical drawings (perspectives, sections, details, etc.).  Blueprint Reading for Industry is suggested.
Course Objectives
This program is a complete introduction to the Y14.5M-1994 and Y14.5-2009 standards. In this GD&T Training we focus on the what, when, why, and how of GD&T. The main goal of the GD&T materials is to bring all participants to a common, basic and operational level of understanding.
GD&T Fundamentals is a thorough introduction to those with a little to a moderate level of experience with GD&T.


Your drawings have GD&T symbols on them (or they should)! If you have been attempting to work with GD&T, and you lack the confidence to specify, or are having trouble interpreting the specifications, this GD&T training is for you. Using GD&T improperly can be worse than not using it at all.


What is the difference between our 2-day class and our 3-day class?  In both offerings the student is trained in important dimensioning concepts.  However, the primary difference is the 3-day class affords the student opportunity to cover each topic in more depth.
  • Objectives and basic overview
  • History of Geometric Dimensioning and Tolerancing
  • Comparison of the “traditional” method – Coordinate Dimensioning – to the Geometric Dimensioning approach
  • Demonstration of GD&T’s Strengths and Advantages:
    • As a Design Tool
    • As a Manufacturing Aid
    • As an overall Communications Facilitator
  • General Rules of Dimensioning and Drafting per the Standard:
    • Tolerance Zones
    • Definition
    • Comparison to Existing Systems
  • GD&T Symbology:
    • Definitions of all 14 geometric controls
    • Modifiers and other symbols
  • “Bonus” Tolerances
    • Definition
    • How to take advantage of them
    • Datum shift
  • Datum Reference Frames:
    • Definition
    • Proper Construction and Selection