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Activity Provided By:

The American Society of Mechanical Engineers

EL505 - Introduction to Geometric Dimensioning & Tolerancing (GD&T) – Y14.5

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Overview / Abstract:

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. Composed of twelve modules with quizzes, most modules have drawing assignments and supplementary information.

Special Requirements
Possession of the ASME Y14.5 Dimensioning and Tolerancing standard is required.

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, parallelism, perpendicularity & angularity
- Explain runout, profile and position tolerance

Please click HERE to view the course outline.

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.

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


Jan 14, 2020


Civil Engineering , Electrical Engineering , Mechanical Engineering





Credits / Hours

CEUs: 2.30
PDHs: 23.00

Presenters / Authors / Faculty

Patrick J. McCuistion, Ph.D., GDTPS, has been an associate professor of Industrial Technology at Ohio University since 1989. Prior to that, Dr. McCuistion taught for three years at Texas A&M University and has eight years’ experience working in various engineering design, drafting, and checking positions at several manufacturing industries. He has provided instruction in geometric dimensioning and tolerancing and dimensional analysis to industry, military, and educational institutions. Dr. McCuistion is an active member of the following ASME/ANSI codes and standards committees: Y14 Main Committee, Y14.2 Line Conventions and Lettering, Y14.3 Multiview and Sectional View Drawings, Y14.5 Dimensioning and Tolerancing, Y14.5.2 Certification for Geometric Dimensioning and Tolerancing Professionals, Y14.8 Castings, Forgings, and Molded Part Drawings, Y14.35 Drawing Revisions, Y14.36 Surface Texture, and Y14.43 Dimensioning and Tolerancing of Functional Gages.

Keywords / Search Terms

The American Society of Mechanical Engineers

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