Geometric Dimensioning and Tolerancing Training, or GDT training


A Division of Tech-Solutions, Inc.
166 Valley Stone Road
Huntsville, AL 35811
Phone: 256-683-3800

GDT Training and Consulting will result in
higher quality and lower manufacturing costs.

Geometric Dimensioning and Tolerancing Training, or GDT training
You can talk to your trainer Ron Hodge directly by calling 256-683-3800! He can answer your questions about training or about GDT on drawings in design or in the shop. If Ron is on the road, leave him a voicemail. He will usually return your call within one day.

Celebrating our 15th year in the GDT training business, Tech-Training is the One Stop Center for all of your Professional and Affordable Training and Consulting needs in:

Geometric Dimensioning and Tolerancing Training, or GDT trainingGEOMETRIC
Geometric Dimensioning and Tolerancing Training, or GDT trainingDIMENSIONING &
Geometric Dimensioning and Tolerancing Training, or GDT trainingTOLERANCING
Geometric Dimensioning and Tolerancing Training, or GDT trainingTRAINING

ASME Y14.5M-1994

We offer multiple training programs, including Basic Geometric Dimensioning and Tolerancing, Geometric Dimensioning and Tolerancing Application, and Mentoring for the ASME GDT Certification Exam. Learn More...

What is GDT?

Why GDT Training?

Who needs GDT Training?


Your GDT Trainer

In-House GDT Training

What GDT Trainees Will Learn from the Basic Program

Consulting Services

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For short courses on structures, bolted joints, and systems engineering in the space industry, go to

Tech-Training provides professional and affordable training and consulting to the industrial Design / Manufacturing / Quality Assurance community in Geometric Dimensioning and Tolerancing. This system of dimensioning and tolerancing mechanical engineering design drawings goes by several acronyms and names. GDT, GD&T, and geometrics are three of the most commonly used. We specialize in on-site training at your facility. That's right - we bring the GDT training program to you and at a price so affordable that you will have to see it to believe it. You now have an alternative to those few "well known experts" who have dominated the geometrics training market for too long with their astronomical prices. Aside from our low cost, we have a wealth of industrial GDT application experience and knowledge and we know how to give it to others. We do all of the GDT training for NASA and have many other satisfied customers across the country and references are available to assure you of the quality of our service.

You probably know what GDT is and its many advantages. You probably also know that not many people in the work force know how to use it adequately. Its misuse cuts through all educational, experience and departmental lines. This lack of knowledge inevitably results in the rejection of good parts, the acceptance of bad parts and the all too frequent rework of tooling and production. It isn't the fault of the work force. GDT isn't the easiest thing to learn and the latest revision of the GDT Standard includes many new concepts. Industry has often expected everyone to pick GDT up on their own or with help from a workbook or video. It just doesn't work that way. For someone to gain a quality and complete working knowledge of GDT, he or she MUST HAVE PROFESSIONAL AND PERSONAL TRAINING.

What about all the people in your company or organization who either prepare or must read and use drawings - do they understand GDT well enough? Do they know GDT by the latest Standard?

Let us tell you all about GDT and our training and consulting. Select from the topics at the left and be sure not to miss the CLASSIC Tech-Training GDT Quiz.

Questions? E-mail us at