Mechanical design Tolerancing ASME Y14.5 GD&T
training picto

ISO/GPS Functional cotation
3 days

95 %

Of attendees in this course recommend it.

(Average rating on all sessions in 2023)



Attendees are satisfied with this trainings.

(Average rating on all sessions in 2023)

" Cette formation a permis de lever des doutes sur de nombreux points. Celle-ci a conforté les choix que j'ai fait en amont de la formation. Les explications étaient claires et limpides vis-à-vis d'une norme pas toujours évidente à comprendre. Des exemples ont été vus suivant nos pièces permettent de dérisquer certains points. "
Valérian, HUTCHINSON (24/10/2023)
" Formation très concrète spécialement adaptée à nos produits et besoins ce qui permet de capitaliser sur nos erreurs. Le formateur était très pédagogue et compétent, très bonne formation. "
Florian, VISION SYSTEM (18/10/2022)
" Très bon formateur, compétent, pédagogue et contenu complet. On a pu aller chercher les spécifications complexes qui ne sont pas dans les formations basiques. Les exemples de cotations fonctionnelles de nos pièces ont été très intéressants. "
Lucas, Ligier Group (05/09/2023)
" Tout s'est très bien passé que ce soit dans le contenu, le formateur, le rythme etc. Le fait de faire des ateliers pratiques avec des pièce de notre entreprise nous permet de comprendre encore plus les enjeux et l'intérêt d'une telle formation. "
Damien, CLEXTRAL, 2023 (03/07/2023)

Overall objectives

  • Know how to carry out the functional dimensioning process, in accordance with current ISO GPS standards:
    • Analysis of functional requirements.
    • Contact/non-contact analysis, associated requirements and determination/optimization of preponderance in interfaces.
    • ISO GPS dimensioning of interfaces/references.
    • Complete functional dimensioning.
    • Tolerancing and optimization of dimensioning, taking into account 2D/3D effects and the impact of process capabilities.

Learning operational objectives

  • If necessary, read a drawing associated with an existing design with a critical view:
    • Understand functional requirements.
    • Rapid analysis/criticism of dimension chains.
    • Analyze/critique dimensioning reference frames.
    • Analyze/critique physical control conditions (for deformable parts).
  • Understand the functional dimensioning language described in current ISO GPS standards:
    • Dimensional tolerancing.
    • Geometric tolerancing.
    • Jig tolerancing.
  • Know how to choose the right quotation strategy according to the cases encountered on the organizing company's products.
  • Carry out tolerance allocation using "worst-case" or "statistical" dimension chains, taking the following elements into account:
    • Controlling the risks taken (over-quality/non-conforming assembly with conforming parts), depending on the tolerancing method chosen.
    • Dimensioning analyses to minimize the number of links.
    • Centering of the functional condition on its target.
    • Calculate sensitivities for 2D/3D dimension chains.
    • Optimization of the dimension chain and allocation of the widest possible tolerances.

The "Pluses" of the training session

  • Tailor-made training based on examples of the host company's products and plans (case studies used if necessary).
  • Theoretical parts organized in a dynamic and interactive way (workshops in subgroups, quizzes, questions, etc.).
  • This training includes a 6-months period of post training support (email exchanges, webinars, phone, response time depending on the trainer’s availability).

Organization and resources

  • Each attendee receives a training manual in English as well as exercise and workshop files used during the session.
  • For face-to-face training, the room must have a video projector as well as a flipchart and a whiteboard with coloured markers in working order.

Evaluation mode

  • Level assessment quizzes for each attendee at the beginning and the end of the training session.
  • Hot satisfaction questionnaire completed by each attendee at the end of the training.
  • Cold evaluation questionnaire, to evaluate achievements realized after the training completed 3 months after training, by each attendee, with their hierarchy.

Targeted audience

  • Anyone who needs to implement ISO GPS functional dimensioning as part of a design process.


  • At least 1 year professional experience in either production, project management, industrial engineering, quality, product design and engineering.
  • To have experience of the organizing company's products.
  • To have experience in mechanical design in the context of the company organizing the training.

Trainer profile

  • Holds master’s diploma from top tier engineering school (Centrale, INSA, Arts et Métiers, UTC). Equivalent to Master's degree in industrial engineering.
  • 20 years' experience in mechanical design (mechanical calculations, ISO dimensioning, blueprint reading, 2D/3D tolerancing), value and functional analysis, FMEA, in an industrial environment.

Useful information

Available packages
  • Face-to-face
  • Online
  • Intra-company
  • Shared training
Next shared training session

Language Start Mode Registrations
Drapeau France


Shared package: 2290 € net* maximum per participant (from 2 pers. enrolled) - Decreasing rate depending on the size of the group.

Intra-company package: Please contact us.

* VAT exemption according to art. 261.4.4 of the CGI


All persons with disabilities, people with reduced mobility, visually impaired and hard of hearing, can attend all our training courses, provided that they report it as soon as possible so that we can adapt the premises and training ressources to their needs.