Basic Print Reading of Mechanical Drawings

Online /
Dec 2, 2024 /
Course Code: 1204-WEB24

The confirmation of this course depends on early registration; Register early to avoid the postponement or cancellation of a course.
  • Overview
  • Syllabus
  • Instructor


After participating in this course, you will be able to:

  • Identify the main views in an orthographic projection drawing
  • Explain the meaning of the different types of lines
  • Visualize a 3D object from the 2D orthographic views
  • Interpret plus/minus, nominal, reference and limit dimensions
  • Explain the various elements found in a title block

This webinar aims to provide participants with the skills and knowledge to interpret the main aspects of a mechanical drawing. Some people have the innate ability to visualize objects in three-dimensional space from a two-dimensional drawing. However, anyone can accomplish this when some basic rules are in place and can even be honed with practice.

The webinar will begin with a discussion of the drawing categories and the meaning of each line type. Then, a significant focus will be placed on interpreting and visualizing orthographic projection. Also covered are auxiliary information on a print (such as the title block and notes), section views, interpreting dimensions/tolerances, other special symbols (such as roughness callouts and screw threads), and an overview of the GD&T system of tolerances. Multiple examples will be provided to show specific applications.

Who Should Attend
Product Engineers • Manufacturing Engineers • Quality/Inspection personnel • Machine Operators • Purchasing and Cost Estimators • Support staff who handle prints

More Information

Time: 12:00 PM - 2:00 PM Eastern Time

Please note: You can check other time zones here.

System Requirements

PC-based attendees
OS: Windows 7, 8, 10 or newer

IE 11 or later, Edge 12 or later, Firefox 27 or later, Chrome 30 or later

Macintosh based attendees
OS: Mac OS X with MacOS 10.7 or later

Safari 7+, Firefox 27+, Chrome 30+

OS: iOS 8 or newer

OS: Android 4.0 or higher


Course Outline

  • Basic steps in reading a print
  • Line types: visible, hidden, center, leader, etc.
  • The title block
  • Orthographic projection views
  • Visualizing in 3D
  • First vs. third angle projection
  • Section views
  • Dimensioning practices
  • Plus/minus vs. limit dimensions
  • Special dimensions/tolerances


John-Paul Belanger

As president of Geometric Learning Systems, John-Paul travels throughout North America and Europe to assist corporate groups in implementing proper tolerance design concepts in all engineering and manufacturing phases.

John-Paul has been a full-time consultant in the area of blueprints and tolerances since 1994. He is certified as a Senior-Level GD&T Professional by the American Society of Mechanical Engineers. He holds an aerospace engineering degree from the University of Michigan and specializes in aircraft design and safety.

The Engineering Institute of Canada

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Course Rating
4.4 out of 5

Overall rating of this course by its previous attendees!

Fee & Credits

$149 + taxes

  • 0.2 Continuing Education Units (CEUs)
  • 2 Continuing Professional Development Hours (PDHs/CPDs)
  • ECAA Annual Professional Development Points

Group Training
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