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Geometric Dimensioning and Tolerancing (GD&T) Training

Participants are introduced to the foundational aspects of Geometric Dimensioning and Tolerancing. GD&T is a specific method of communicating dimensions and tolerances for size, location, orientation, and form. The basic definition and objective of GD&T is:

Geometric: A way of thinking about and communicating dimensions and tolerances for a product.

Dimensioning: Calculating, recording, and communicating desired values for size, location, orientation, and form.

Tolerancing: Calculating, recording, and communicating acceptable ranges for size, location, orientation, and form.


The major topics will include:

1. Features
2. Datums
3. Form
4. Orientation
5. Profile
6. Position
7. Coaxial Features


Benefits of Attending

At the completion of the course, participants will have an increased knowledge and improved practical application skills for the GD&T process.

Additional Details

The course will be conducted in person using a combination of instructor lead presentation material, participant workbook, and group discussions to cover the material. If possible, participants are encouraged to bring electronic drawing samples to aid in applying concepts to their particular needs.

This foundational course is recommended for those with a need to understand engineering prints including: managers, project management, engineering, quality, and production staff.

Course includes a training guide you will receive the day of the training.


About the Instructor:

Leo Wozniak’s extensive manufacturing experience includes positions as Machinist Apprentice, Journeyman Machinist, Group Leader, and Machine Shop Manager. He retired from Hamill Manufacturing as a Methods Engineer where he worked determining methods of processing and manufacturing parts vital to the Navy Nuclear program, Aerospace, and other Defense related items. Leo is currently certified ASME GDTP Senior Level.

His teaching experience includes machine shop related courses at Triangle Tech, Micro Teaching Factory, and the NTMA Machinist Apprenticeship program. He has contributed to the NIMS credentialing program by revising and verifying the drawings used by the program throughout the world. When a fellow journeyman machinist and instructor, Robert E. Friel, started REF Technical Training Services, Leo joined him to provide training at customer locations. They have been training and consulting for over 26 years.



December 12, 2023
8:30 am - 4:30 pm
Event Category:
1 Day


Catalyst Connection
4501 Lytle Street, Building A, Suite 301
Pittsburgh, PA 15207 United States
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WEDnet Eligible Training

Learn how the WEDnet Grant could help qualified businesses pay for this training.

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