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GPS 120 - Introduction to Geometrical Tolerancing

An introduction to geometrical tolerancing within GPS.

In this course you will learn about all the 14 geometrical tolerancing symbols that are used within GPS through easy to follow examples.

You will also receive a brief introduction to datums, sufficient for you to understand the use of datums in the examples.

The course is an introductory course aimed at those without any background in geometrical tolerancing. You will receive a basic understanding of how geometrical tolerancing works, what each of the tolerancing symbols means and how the tolerance zones are defined, allowing you to get started with geometrical tolerancing. You should consult the ISO GPS standards listed below for the complete rules for geometrical tolerancing.

The course is based on ISO 1101, ISO 1660 and ISO 5459.

The course gives examples of all the sub-types of geometrical tolerancing, including:

  • Form tolerancing
  • Orientation tolerancing
  • Location tolerancing
  • Profile tolerancing
  • Runout tolerancing

Geometrical Product Specifications (GPS) is the international symbol language used to express tolerances in technical drawings. It defines the nominal geometry of the components that make up the product, and the tolerances that quantify the allowable deviations from this nominal geometry.

The ISO-GPS language is defined in a number of ISO standards developed by ISO Technical Committee 213 "Dimensional and geometrical product specifications and verification".

This is a basic course that will get you started with geometrical tolerancing. It does not provide all the details and rules that apply in every case. This would require a much more extensive course.


Your Instructor


Henrik S. Nielsen
Henrik S. Nielsen

Dr. Henrik S. Nielsen is the president of HN Metrology Consulting and HN Proficiency Testing, the first accredited proficiency testing provider catering to dimensional inspection and calibration laboratories in the US.

His areas of expertise include geometrical product specifications, dimensional metrology, uncertainty estimation and quality assurance for calibration laboratories. He teaches seminars on all of these subjects though various organizations.

Dr. Nielsen is the chairman of ISO Technical Committee 213 “Geometrical Product Specifications and Verification” and has been an expert serving on related committees since 1988. He has served as project leader and author of several ISO standards.

Prior to founding HN Metrology Consulting in 1998, Dr. Nielsen was the Technical Manager of Corporate Standards at Cummins Engine Co. in Columbus, Indiana. Dr. Nielsen holds a M. Sc. In Mechanical Engineering and a Ph. D. in Metrology, both from the Technical University of Denmark.


Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.

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