Design & Manufacturing Technologies

Geometric Dimensioning and Tolerancing "GD&T"

DMT 52 - GD&T for "CAD" offered Winter 2018

DMT 92 - Applied GD&T for "CMM"

Winter classes begin Monday Jan. 8th 2018

DMT 92 is also highly recommend taking: Applied Geometric Inspection Dimensioning and Tolerancing (ASME Y14.5M); Coordinate Measuring Machines (CMM ) Book used

DMT 52 - GD&T:


Text Book: Geometric Dimensioning and Tolerancing 9th Edition:

By: David A. Madsen and David P. Madsen


Class outlines: See Canvas

Student Documentation Package - Example 1 , Example 2


Sample Video Lectures on 3CMedia



Geometric Dimensioning and Tolerancing


The GD&T Hierarchy Pyramid


GD&T Glossary: (Based on ASME Y14.5-2009)


7 Deadly Sins of Dimensioning and Tolerancing


Canvas  - "access to class material" - How to use it.

Online Education and Course Interface Access



Why use GD&T?             What is GD&T?



Supplemental class material.


Engineering Graphics and Design: With Graphical Analysis   By Louis Gary Lamit

DMT 52 - Book,204,203,200_.jpg


Book Description:


Geometric Dimensioning and Tolerancing provides thorough coverage of GD&T practices, as established by the ASME Y14.5–2009 standard. From understanding symbols on existing drawings to calculating the tolerances for proper size and location of features, topics are introduced in a methodical manner to establish an understanding of basic concepts before building to more advanced applications. Heavily illustrated, the use of the second color enhances learning by highlighting callouts and labels separately from the symbols and text of each drawing.


ISBN #  978-1-60525-938-3


Look Inside:


 Front Matter (, CAD / Drafting)


Chapter 3 (, CAD / Drafting)


Chapter 9 (, CAD / Drafting)


PowerPoint Presentations

   sample Chapter 3 (PPS, 5.54 MB)


Other useful resources of interest.

Chapter 15 & Chapter 16 GD&T and Dimensioning  as per ASME Y14.5 2003

Principles of Engineering Drawing

3D Tolerancing Poster

GD&T Tips

The GD&T Hierarchy Pyramid

Y14.5 - 2009 Dimensioning and Tolerancing - Book

GD&T Articles

GD&T Hierarchy PowerPoint Presentation

7 Deadly Sins of Dimensioning and Tolerancing

Design & Manufacturing Technologies Building: E-2
Contact: Max J. Gilleland
Phone: 408.864.8796

Last Updated: 10/12/17