Learn GD&T from the Experts

Master geometric dimensioning and tolerancing with our live training, online courses, and comprehensive books and materials.

GeoTol's GD&T Training Offerings

Live Training

Our experts can hold in-person or virtual GD&T courses.

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Online Training

Learn GD&T at your own pace with our online courses.

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Books & Products

Shop our best-selling GD&T books and training materials.

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Why Choose GeoTol?

GD&T Training Crafted by Experts

GeoTol’s GD&T course authors, Al Neumann and Scott Neumann, have continually served as vice chair on the ASME Y14.5 and Y14.5.1 standards’ committees.

They are also members of Y14.5.2 for test certification, Y14.45 measurement data reporting, AED advanced engineering drawings, and ISO H213 to help write ASME and ISO-GPS standards for over 40 years.

ASME Approved

The American Society of Mechanical Engineers (ASME) uses our training programs and instructors to deliver their public GD&T courses.

Trusted by Top Customers

Our GD&T training is used by many Fortune 500 companies in the fields of automotive, industrial, aerospace, medical, consumer products, and defense.

Engaging Learning

Our GD&T training integrates software, animated computer graphics, 3D printed plastic models, and polling technology for the most engaging learning experience.

Multiple Training Options

Live training can be supplemented with GeoTol online courses and in-company network versions for new hires and retraining.

Multi-Focused Approach

Live training can be supplemented with the best GD&T online courses and in-company network versions for new hires and retraining.

Why Use GD&T?

  • Standardized symbolic language backed by ASME Y14.5 and ISO-GPS Standards
  • Design tool to work out complex alignment issues before manufacture
  • Documentation of complex relationship requirements
  • More functional tolerance values
  • Reduced scrap and failures because of the clearly defined functional requirements
  • Minimized tolerance stack ups
  • Increased manufacturing tolerances
  • More meaningful inspection data
  • Quicker solutions to tolerancing problems
  • Ability to use Model Based Definition (MBD)

"GeoTol has created a systematic training program for geometric dimensioning and tolerancing that brings engineering, manufacturing, and quality together with one technical language."
Dan Masters
Program Chair, Computer Aided Design Drafting, Southeast Community College
"I enjoyed the course. It really helped me brush up on my geometric tolerancing. It was the next best thing to having you guys here giving the course."
Ed Rosienski
Senior Mechanical Designer, Kollmorgen Corporation
"I had great response from Scott's class. Comments I heard back was things such as: his explanations were very easy to understand, he did not try to over talk the material, his in class tools and presentation skills were excellent."
Jerry Hornback
Faurecia Emissions Control Technologies
"In my opinion, if you have not looked at their GeoTol training program and materials, then you and your company have been missing out on the most professional geometrics training available today."
Jim Jones
Bettis Atomic Power Laboratory
"I have attended many training classes throughout my career, but I cannot recall a single instance when I learned more useful and practical information than last week. Thanks again for your help."
Kevin Devine
Department of Technology, Illinois State University
"I would just like to congratulate you on your DVD training course in GD&T to the 2009 standard. It is very well done in a format that makes it logical and understandable."
Malkin Shaw
CMfgE, GDTP Sr
"Once again, thank you. Your teaching method is so effective. I now can learn GD&T without leaving my house. I love it."
Phe Do
ASME GDTP Senior Level
"I think that this was one of those rare training courses that allows you to go into your office on Monday with what you have learned and do your job more effectively."
Robert Snodgrass
Naval Surface Warfare Center
"I just wanted to thank you guys for your GREAT instruction and help! I passed my exam for Senior GDTP Certification!!!"
Ryan Kelbey
ASME GDTP Senior Level, Woodward Turbine Combustion Systems

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