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ETI Professional Development Seminars

ISO Geometrical Tolerancing 2-Day
(Based on ISO 1101:2004 and related standards)

Course ID # ET7103

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Online registration redirects to the SAE International website. (Learn more.)

Providing you have a basic understanding of mechanical drawings, this course teaches how to use engineering drawings that use the International Standards Organization (ISO) standards.

Utilizing the expertise of world-renowned GD&T expert Alex Krulikowski, this course will teach you to recognize what is required on a standard-compliant drawing and recognize geometrical tolerances based on the ISO standards. The course combines information from dozens of ISO standards into a logical understandable topic. Newly acquired learning is reinforced throughout the class with more than 150 practice problems.

Please be aware that this course covers only the topics listed. It does not cover the major ISO principles and terms; view projection; limits and fits; cylindricity; parallelism; position tolerancing MMR; special applications; coaxiality; concentricity; symmetry; general, linear, and angular geometrical tolerances; workpieces edges; or surface texture. See the ISO Geometrical Tolerancing Complete course which covers these topics.

  • What You Receive
  • Learning Objectives
  • Who Should Attend
  • Topical Outline

Each attendee receives a robust collection of learning resources including:

  • Alex Krulikowski’s ISO Geometrical Tolerancing Reference Guide
  • An ISO Geometrical Tolerancing Workbook
  • Class handouts
  • Certificate of Attendance

Tens of thousands of students have learned GD&T through Alex Krulikowski’s textbooks, self-study courses, computer- based training, and online learning center.  Students who attend courses like this one walk away with more than knowledge. They gain on-the-job skills because the learning materials are performance-based.

By attending this class, you will be able to:

  • Explain the structure of GPS and the domains of features
  • Recognize the symbols used in geometrical tolerancing
  • Describe linear size and size conditions
  • Explain the principle of independency and the envelope requirement  
  • Explain geometrical tolerancing concepts: MMR, LMR, RPR, virtual conditions, and collective requirements
  • Describe the datum system (planar datums)
  • Interpret datum target and size datum specifications
  • Interpret the flatness, straightness, roundness, , perpendicularity, and angularity tolerances
  • Explain the fundamental concepts of position tolerances
  • Interpret the circular and total run-out tolerances
  • Interpret the profile any surface and profile any line tolerances

Who Should Attend
This course is valuable for individuals who create or interpret engineering drawings, product and gage designers; process, product, and manufacturing engineers; supplier quality engineers/professionals; CMM operators; buyers/purchasers; checkers; inspectors; technicians; and sales engineers/professionals

Students should have completed ETI's Engineering Drawing Requirements course or equivalent.



GPS and Domains of Features

  • GPS master plan
  • Three domains of a geometrical feature
  • Definitions: feature, integral feature, nominal, real, derived feature, extracted median line, extracted median surface, associated feature, extracted feature

Geometrical Tolerancing Modifiers and Symbols

  • Four types of geometrical tolerancing
  • Interrelationship of geometrical tolerances
  • Nine common tolerance zones
  • Common symbols and modifiers
  • TEDs
  • Tolerance frame conventions

Linear Size and Size Conditions

  • Size, feature of size, linear tolerance
  • MMC / MMS, LMC / LMS, RFS & RFS rules

Independency and Envelope Principles

  • Independency principle
  • Envelope principle
  • When to use, how to determine which applies

Key Geometrical Tolerancing Concepts

  • MMVS & LMVS calculations
  • Reciprocity requirement. RPR Rules
  • Collective requirements,
  • Boundary types

The Datum System (Planar Datums)

  • Datums, benefits, basis for datum selection
  • Datum, datum-system, datum feature, simulated datum feature
  • Datum letter frame, datum from coplanar features, three-plane datum system
  • Effect of datum sequence

Datum Target Specifications

  • Usage
  • Datum target frame, datum target point, datum target line, area, and symbols
  • Establishing datums from targets, specifying targets

Size Datum Specifications

  • Size datum features, specifying size datum from a cylinder
  • Coaxial cylinders
  • Width, sphere, circular element
  • Rules for MMR, LMR, and RFS for datum features,
  • Common axis, median center point, group of features as a datum
  • Specifying size datums
  • Threads and gears as datum features


Flatness Tolerance

  • Tolerance zone, usage
  • Effect of envelope and independency principles
  • Calculating extreme boundary, modifiers, drawing examples
  • Indirect flatness tolerances

Straightness Tolerance

  • Tolerance zone, usage
  • Effect of envelope and independency principles
  • Calculating extreme boundary, drawing examples
  • Straightness MMVC
  • Indirect straightness tolerances

Roundness Tolerance

  • Tolerance zone, usage,
  • Effect of envelope and independency principles
  • Calculating extreme boundary, drawing examples
  • Indirect roundness tolerances

Perpendicularity Tolerance

  • Tolerance zone, usage,
  • Applications to integral & derived features
  • Calculating extreme boundary (RFS)
  • Perpendicularity MMVC, applied to groups at MMVC
  • Indirect perpendicularity tolerances

Angularity Tolerance

  • Tolerance zone, usage
  • Applications to integral & derived features
  • Angularity MMVC
  • Indirect angularity tolerances

Position Tolerance

  • Requirements
  • Implied TED
  • Tolerance zones
  • Advantages, common applications
  • MMR / LMR / RPR / RFS, where to use
  • Surface and size application

Run-Out Tolerances

  • Three methods of establishing a datum axis
  • Tolerance zones, usage
  • Effect of envelope and independency principles
  • Deviations affected by circular and total run-out
  • Extreme boundary
  • Indirect run-out tolerances, summary

Profile Tolerances

  • Tolerance zones and extents
  • Uses for profile any surface
  • Drawing applications
  • Multiple single-segment tolerancing
  • Indirect profile any surface tolerances
  • Uses for profile any line, indirect profile any line tolerances
  • Drawing applications, summary

Course summary, final learning assessment

Instructor(s): This course is taught by one of ETI’s approved instructors, each of whom has been vetted and mentored by Alex Krulikowski.

ISO Geometrical Tolerancing 2-Day
ID # ET7103

Fee: $1280; SAE Members*: $1024-$1152

* The appropriate SAE Member discount will be applied through the registration process. Discounts vary according to level of membership: Elite Member 20%; Premium Member 15%; Classic Member 10%

Quantity discounts available. ETI offers a 10% discount on three or more registrations. Call for more information.

See our locations in Livonia and Troy, Michigan.

You can register by telephone by contacting SAE International Customer Service at 1.877.606.7323 (U.S. and Canada only) or 1.724.776.4970 (Outside U.S. and Canada), now that Effective Training Inc. (ETI) is an SAE International company.


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This file last modified 06/20/18