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Fundamentals of GD&T

5.00 out of 5 based on 10 customer ratings
(10 customer reviews)



3-Day Seminar
2.4 CEU’s

Course Description

This course is an introduction to the ASME Y14.5 standard.


  1. Introduce the concepts and some of the language of the Y14.5 standard.
  2. Enable participants to understand each of the Y14.5 standard’s symbols.
  3. Bring participants to a fundamental understanding of Datum Reference Frames.
  4. Understand the definitions and the effects of Material Condition Modifiers.
  5. Begin to prepare the participants for the ASME GDTP certification exams.

Product Information (PDF Format)

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Price: $1,200.00

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Your drawings have GD&T on them (or maybe they are supposed to)! 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 course is for you. Using GD&T improperly can be worse than not using it at all! This program is a complete introduction to the Y14.5 standard. In this program we will focus on the “what, when, why and how” of GD&T. The main goal is to bring all participants to a common, basic and operational level of understanding. The course is a thorough introduction to those with a little to a moderate level of experience with GD&T, but you will not be an expert. Complete GD&T training requires more than just a few days

Program Outline

The program begins with a bit of the history of GD&T, then we look at the cost of designing and manufacturing a part. We will compare the “old” methods of dimensioning and Tolerancing to the Y14.5 approach. In this analysis, we will demonstrate the strengths and advantages of GD&T as a design tool, as a manufacturing aid, as a purchasing (estimator) aid, and as an overall communications facilitating tool. We incorporate many practical exercises to enhance learning, and to increase confidence. The subject matter covered is (as a minimum):

  • Introduction – Objectives, review of the “old” system versus GD&T
  • General rules of dimensioning and drafting per the standard.
  • Tolerance Zones – definition, concepts, comparison to existing systems.
  • GD&T symbology and definitions of controls – particular emphasis on position tolerancing
  • “Bonus” Tolerance – definition and how to take advantage of them
  • Datum Reference Frames – definition and proper construction and selection

Who Should Attend

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.). GD&T Overview and Print Reading suggested.

Continuing Service

At AGI we are particularly concerned that the individuals that we teach actually retain that which their companies and we have worked so hard to present. This concern is precisely why we offer, for each participant of any AGI seminar, access to a senior consultant (usually the instructor of the course) who will be available to answer any follow up questions after the course via telephone or fax.

Additional Information

Choose a Location

Cincinnati, OH, Dayton, OH, Holiday Inn Express Costa Mesa, CA, Irvine, CA, Louisville, KY, Maruka OK, Methods Machine; Wixom, MI, PIC, Irvine, CA, Tucson, AZ Hilton Gardens, Wingate Arlington Hts, IL, Inspection Engineering – Westlake, OH, Wyndam Garden Warsaw, Wingate Schaumburg: Schaumburg, IL

Choose a Date

February 6-8, 2019, April 17-19, 2018, May 9-11, 2018, June 6-8, 2018, July 24-26, 2018, September 19-21, 2018, August 8-10, 2018, August 27-29, 2018, September 18-20, 2018, October 10-12, 2018, October 30-November 1, 2018, December 4-6, 2018

10 reviews for Fundamentals of GD&T

  1. 5 out of 5


    Mark is an unbelievable teacher. His fundamentals are very strong and the way he teaches drawing references to the real world applications really keeps things in perspective. It was kind of a revelation of sorts for the whole group who took this class. Best GD&T class bar none.

  2. 5 out of 5


    GD&T Fundamentals @ HEICO (Hollywood, FL), “The instructor was very good at adressing the most common mistakes we engineers might do when calling out GD&T erroneously on our drawings, and also explaining the concepts of GD&T. I found the class very helpful to my practice and i hope i can use it properly in my future drawings.

    Thank you.”

  3. 5 out of 5


    Inspector, I feel very fortune to get the opportunity to sit in Mark’s class. The class was interesting, my co-workers and I were very engaged and continue to reference many of the things Mark insrtucted us on. I know we are all better for it. I hope to get the opportunity to sit for the advanced class in the future.

  4. 5 out of 5


    Engineer, “The Course was excellent for 3 major reasons:
    -Mark is a gifted teacher that knows how to poll for absorption of material, knows the common stumbling points in the course and treads carefully, and breaks down complicated issues into easily digestible chunks of information.
    -The course materials are excellent and written in a conversational, easy to understand style.
    -The demonstration hardware Mark has on hand really helps those who learn better visually.

    In short, he addresses those that learn best by hearing, seeing, as well as reading.”

  5. 5 out of 5


    Production / Manufacturing Engineer, Having had an understanding of GDand T, I thought that Mark’s presentation was excellent as I didn’t realize how little I knew. His enthusiasm kept not only myself but the entire group engaged during the training, and fostered many after class conversations. His knowledge of the subject was well reflected in his ability to relate real world application of the daily subject, obviously there was much consideration given to his wide selection of practical 3D examples. I look forward to taking an advanced training session.

  6. 5 out of 5


    Director of Engineering, My team and I really enjoyed this training. The instructor, Mark Foster, kept the students entertained and engaged, and really made an effort to ensure that the students were retaining the information. I have seen an improvement in how my Engineering and Quality staff are now communicating about tolerance specifications. The material that was presented was extremely valuable, and we are very happy with AGI’s service.

  7. 5 out of 5


    As a Quality Engineer, I trained and learned GD&T throughout experience, trial error, tutorials and reading ASME Y14.5 to the best of my knowledge. However, Mark Foster in his fundamentals of GD&T, makes this subject a real learning experience that I want to learn more. He uses a well and thoughtful cognitive approach that keeps you interested all three days of training. It’s amazing how much one can utilize GD&T once, one starts applying the language the right way!

  8. 5 out of 5


    Speaking for me, the class was extremely helpful. The class I previously had covered the material but this one was presented in a far more effective way. Speaking for the others, I only heard positive comments. One colleague told me he was not looking forward to the class but afterwards he was very impressed. Jamie kept it interesting from start to finish.

  9. 5 out of 5


    Mark was fabulous!
    The big issue that our firm struggled with was datum selection. This was crucial for us since we were dealing with so many sand castings. He thoroughly explained how to select datums correctly, but did it in a way that was very understandable. Awesome instructor!

  10. 5 out of 5

    (verified owner):

    Manuel was a great instructor and made the material interesting to learn. He was very patient when questions were asked and his knowledge is vast. I would highly recommended AGI if you are wanting top notch trainging in GD&T.

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