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Basics of Geometric Dimensioning & Tolerancing banner

Basics of Geometric Dimensioning & Tolerancing

Basics of Geometric Dimensioning & Tolerancing banner
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Basics of Geometric Dimensioning & Tolerancing

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3 hrs
-
English
460 views
ProCAD tech solutions
ProCAD tech solutions
AutomotiveAerospace
  • 7-day money-back guarantee
  • Session recordings included
  • Certificate of completion
Volume pricing for groups of 5+

Why enroll

To understand how engineering drawings are actually read in industry

To learn how parts are defined, produced, and inspected correctly

To gain confidence in reading and interpreting technical drawings

To clearly communicate design intent without ambiguity

To control part functionality using tolerances based on usage, not assumptions

To design parts that are manufacturable and inspectable

To apply GD&T as per ASME / ISO standards in real projects

Your instructor

ProCAD tech solutions

ProCAD tech solutions

Project Lead

India

2Courses
1Articles
2Seminars

Is this course for you?

You should take this if

  • You work in Automotive or Aerospace
  • You're a Mechanical Engineering / Production Engineering professional
  • You want to build skills in GD&T
  • You prefer live, instructor-led training with Q&A

You should skip if

  • You need a different specialisation outside Mechanical Engineering
  • You need fully self-paced, on-demand content

Course details

Geometric Dimensioning and Tolerancing (GD&T) is a symbolic language used in engineering drawings to precisely define the size, form, orientation, and location of features on a part.

It ensures that design intent is clearly communicated between design, manufacturing, and inspection teams. By using standardized symbols (as per ASME Y14.5 / ISO standards),

GD&T improves product quality, ensures interchangeability of parts, reduces manufacturing ambiguity, and minimizes rework and cost.

Course suitable for

Key topics covered

1. Fundamentals of GD&T

  • Why GD&T is needed over conventional dimensioning

  • GD&T standards overview (ASME Y14.5 / ISO)

  • Basic terminology and concepts

2. Datums & Datum Reference Frames

  • What are datums and why they are critical

  • Primary, secondary, and tertiary datums

  • Functional relationship between features

3. Form & Orientation Controls

  • Straightness, flatness, circularity, cylindricity

  • Perpendicularity, parallelism, angularity

  • When and where to use form and orientation tolerances

4. Runout & Circularity Concepts

  • Circular runout vs total runout

  • Applications in rotating parts and assemblies

  • Functional importance in shafts, gears, and holes

5. Location & Profile Tolerances

  • Position tolerance and true position concept

  • Profile of a line and profile of a surface

  • Functional applications and examples

6. Feature Control Frame & Modifiers

  • Understanding the feature control frame

  • MMC, LMC, and RFS concepts

  • Bonus tolerance and its advantages

7. GD&T in Practice – Industry Examples

  • Common mistakes in GD&T usage

Opportunities that await you!

Skills & tools you'll gain

GD&T

Career opportunities

Training details

This is a live course that has a scheduled start date.

Live session

Starts

Sun, Feb 1, 2026

9:30 AM UTC· your timezone

Duration

3 hours per day

COMPLETED

-

Questions and Answers

A: That's the most common mistake — treating location like size. Size limits don't lock the true location of the pattern, so stack-up bites you at assembly even if every feature is in spec. Position ties all holes back to datums that actually matter to fit.

A: That's the mix-up — flatness lives in its own little world. It keeps the surface within two planes, but it doesn't care where those planes sit or how they're angled to anything else, so orientation drift is still on the table.

A: That's where people forget the part lives in the real world. Cast and coated faces move with corrosion and wear, so your measurement reference drifts; a machined datum stays stable over life and keeps inspection repeatable.

A: That's the trap when the clock’s ticking — skipping the datum setup. Orientation tolerances are meaningless without the reference frame, so any shortcut gives you a number that looks precise and tells you nothing.