EL505_EL2024_04 - Introduction to Geometric Dimensioning & Tolerancing (GD&T) – Y14.5 has been added to your cart.

Introduction to Geometric Dimensioning & Tolerancing (GD&T) – Y14.5

Learn introductory geometric dimensioning controls for mechanical engineering drawings per ASME Y14.5 Dimensioning and Tolerancing standard.

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  • Jul 08-Aug 19th, 2024


  • Aug 26-Oct 07th, 2024


  • Oct 21-Dec 02nd, 2024



Extended Enrollment Available

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Designed for those who use the ASME Y14.5 Dimensioning and Tolerancing Standard, this course covers most of the geometric dimensioning controls used on mechanical engineering drawings. Theoretical and practical concepts of each of the geometric controls are explained relative to design, tooling/production, and inspection. Parts of a directional-change gear box are used as platforms for the geometric controls, including shafts, gears, bearings, keys, lip seals, castings, and threaded fasteners.

 This is an online, instructor-supported course, allowing you to work at your own pace and convenience. The course features interactive web-based modules, practical applications, instructor-graded drawing assignments, and quizzes.

Special Requirement
Access to the ASME Y14.5 - 2018 Dimensioning and Tolerancing Standard is required. While required, the Y14.5 Standard is not included in the purchase of the course. To purchase the Y14.5 Standard, click here.

You Will Learn To

  • Identify Symbols and feature control frame
  • Explain the terms, rules & measurement devices
  • Describe the characteristics of straightness, flatness, circularity & cylindricity
  • Explain how to work with datums, angularity, parallelism, and perpendicularity
  • Explain runout, profile, and position tolerance

Who Should Attend
Beginning designers, drafters, quality, procurement, tooling, production, manufacturing and shop personnel; designers, and others involved with tooling, production, inspection, routing in the shop; those involved with purchasing, costing and management; vendors and suppliers.

A Certificate of Completion will be issued to registrants who successfully complete the course and achieve a passing score on all instructor-graded assignments and 75% or higher on all assessments.

To take this course you should have a personal computer, Web browser, Internet connection, and software to display PDF files (such as Adobe Reader).


Module 1: Course Introduction

  • Course Overview
  • Course Introduction
  • Product Realization
  • Design
  • Tooling/Production
  • Inspection
  • Module Figures
  • 4.3 Dimensional Measurement Plan
  • Conclusion 

Module 2: Y14.5 Introduction

  • Y14.5 2018 Introduction
  • Y14.5 2018 Sections
  • Previous United States Dimensioning and Tolerancing Standards
  • Conclusion

Module 3: Scope, References, Definitions

  • Introduction
  • Section 1 – Scope
  • Section 2 – References
  • Section 3 – Definitions
  • Conclusion
  • Module 3 Quiz

Module 4: Fundamental Rules

  • Introduction
  • Section 4 – Fundamental Rules
  • Conclusion
  • Module 4 Quiz

Module 5: Tolerancing

  • Introduction
  • Section 5- Tolerancing
  • Material Condition Applicability
  • Virtual Condition
  • Screw and Threads
  • Gears and Spines
  • Conclusion
  • Module 5 Quiz

Module 6: Symbology

  • Introduction
  • Section 6 – Symbols
  • Conclusion
  • Application Problem(s)
  • Module 6 Quiz

Module 7: Datums

  • Introduction
  • Section 7- Datums
  • Degrees of Freedom
  • Datum Features
  • Datum Relationships
  • Geometric Characteristics
  • Datum Combinations
  • Data Application
  • Conclusion
  • Application Problem(s)
  • Module 7 Quiz

Module 8: Form Tolerances

  • Section 8 – Form Tolerances
  • Section 8 – Flatness
  • Section 8 – Circularity/Cylindricity
  • Conclusion
  • Application Problem(s)
  • Module 8 Quiz

Module 9: Orientation

  • Introduction
  • Section 9 – Orientation
  • Line Element Orientation
  • Surface Orientation
  • Size Feature Orientation
  • Virtual Condition
  • Conclusion
  • Application Problem(s)
  • Module 9 Quiz

Module 10: Position 

  • Introduction
  • Section 10 – Position
  • Position Theory
  • Position Dimensioning
  • Shift
  • Coaxial Control
  • Noncircular Feature Control
  • Conclusion
  • Application Problem(s)
  • Module 10 Quiz

Module 11: Profile

  • Introduction
  • Section 11 – Profile
  • Conical Surfaces
  • Conclusion
  • Application Problem(s)
  • Module 11 Quiz

 Module 12: Runout

  • Introduction
  • Section 12 – Runout
  • Conclusion

Evan Janeshewski, GDTP

Principal, Axymetrix Quality Engineering, Inc.

Evan Janeshewski is the founder and president of Axymetrix Quality Engineering Inc. in Langley, BC. He has more than 20 years of experience teaching GD&T at beginner, intermediate and advanced levels.

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Guided Study

Online learning augmented with instructor-supported activities and/or graded assignments to complete at your own pace. Courses run in 6-week sessions.
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