GD&T Fundamentals Based on ASME Y14.5-2009

Course code: PD02550090

The course contains 29 lessons that explain the terms, symbols, modifiers, rules, and basic concepts of geometric tolerancing as prescribed in the ASME Y14.5-2009 standard. It takes approximately 24-28 hours to complete.


Upon completion of this course, you will be able to:

  • Explain the importance of standards on engineering drawings
  • Describe the types of dimensions, tolerances, and notes
  • Explain why geometric tolerancing is superior to coordinate tolerancing
  • Interpret the general dimensioning symbols
  • Define the key terms used in GD&T
  • Recognize the symbols and modifiers used in GD&T
  • Explain the rules used in GD&T
  • Describe the concepts of worst-case boundary, virtual condition, and bonus tolerance
  • Interpret the various types of tolerance (flatness, circularity, cylindricity, straightness, perpendicularity, parallelism, angularity, position, runout, and profile)
  • Describe the datum system
  • Interpret applications of datum targets, size datum features (RMB), and size datum features (MMB)

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Course dates

Starting date: Upon request

Type: TOD

Course duration: 90 days

Language: en

Price without VAT: 375 EUR


Type Course
Language Price without VAT
Upon request TOD 90 days en 375 EUR Register
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Course structure

  • Drawing Standards
  • Dimensions, Tolerances, and Notes Used on Drawings
  • Coordinate Tolerancing & GD&T
  • General Dimensioning Symbols
  • Key GD&T Terms
  • Symbols & Modifiers
  • GD&T Rules
  • GD&T Concepts
  • Flatness Tolerance
  • Straightness Tolerance
  • Circularity Tolerance
  • Cylindricity Tolerance
  • The Datum System
  • Datum Targets
  • Size Datum Features (RFS)
  • Size Datums Features (MMC)
  • Perpendicularity Tolerance
  • Parallelism Tolerance
  • Angularity Tolerance
  • Position Tolerance – Intro
  • Position Tolerance – RFS/MMC
  • Position Tolerance – Special Applications
  • Position Tolerance – Calculations
  • Circular Runout Tolerance
  • Total Runout Tolerance
  • Concentricity Tolerance
  • Symmetry Tolerance
  • Profile Tolerance – Intro
  • Profile Tolerance Applications
Materials Provided
  • 90 days of online single-user access (from date of purchase) to the 24 hour course
  • 2.4 CEUs*/Certificate of Achievement (upon completion of all course content and a score of 80% or higher on the final exam)


This course is valuable for individuals who create or interpret engineering drawings, product and gage designers; process, product, and manufacturing engineers; supplier quality engineers/professionals; CMM operators; buyers/purchasers; checkers; inspectors; technicians; and sales engineers/professionals.

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