Canadian Measurement Metrology
Home > Training > GD&T Fundamentals

GD&T Fundamentals

GD&T Fundamentals Training


This is an introductory course to the ASME Y14.5 - 2009 standard.  If you lack the confidence to specify, or are having trouble interpreting the specifications, this Geometric Dimensioning and Tolerancing (GD&T) training is for you. The training will focus on explaining why GD&T is essential and aim to bring each participant to an operational level of understanding. 

Coming soon, Our one-day GD&T course. Contact us here for more information


New Call-to-action

Length: 3 days
Price: $1500 CDN

Prerequisite: A working understanding of technical drawings (perspectives, sections, details, etc.). 

Course Material Included: 


Fundamentals of GD&T Textbook 

Exercise Workbook with Tests and Quizzes 

 Revision Reference Chart – 11” x 17” GD&T Revision Reference Chart depicting Y14.5 changes from 1982 to 1994 to 2009. 

Characteristics Chart – This 11” x 17” chart is a quick-reference chart that gives the main aspects and rules of all 14 geometric characteristics. 

New Call-to-action

Course Objectives

  • Introduce the concepts and some of the language of the Y14.5 standard.
  • Enable participants to understand each of the Y14.5 standard’s symbols.
  • Bring participants to a fundamental understanding of Datum Reference Frames.
  • Understand the definitions and the effects of Material Condition Modifiers.





  • Objectives and basic overview
  • History of Geometric Dimensioning and Tolerance
  • Comparison of the “traditional” method – Coordinate Dimensioning – to the Geometric Dimensioning approac

Demonstration of GD&T’s Strengths and Advantages:


  • As a Design Tool
  • As a Manufacturing Aid
  • As an overall Communications Facilitator

General Rules of Dimensioning and Drafting per the Standard:


  • Tolerance Zones
  • Definition
  • Comparison to Existing Systems

GD&T Symbology:


  • Definitions of all 14 geometric controls
  • Modifiers and other symbols

“Bonus” Tolerances:


  • Definition
  • How to take advantage of them
  • Datum shift

Datum Reference Frames:


  • Definition
  • Proper Construction and Selection

New Call-to-action

Request more information: