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ETI Professional Development Seminars

ASME to ISO Standards Comparison 1-Day

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ID# ET2025
0.7 CEUs
Providing you have a basic understanding of Y14.5 Dimensioning and Tolerancing practices, this course explains the major differences between the ASME and ISO standards in a concise, easily understood manner.
Utilizing the expertise of world-renowned GD&T expert Alex Krulikowski, the course focuses on how the standards compare when dealing with symbols, feature control frames, tolerances, form controls, datums, and more. Newly acquired learning is reinforced throughout the class with numerous practice problems.

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

Each attendee receives a robust collection of learning resources including:

  • A copy of the ASME/ISO Exercise Workbook, by Alex Krulikowski
  • Class handouts
  • Official certificate of completion

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 how ASME and ISO standards are developed
  • Recognize the advantages and cautions of using ASME and ISO standards
  • List the major differences in technical drawing presentation
  • Recognize the major differences between ASME and ISO geometric tolerancing terms and symbols
  • Recognize the major differences between ASME and ISO datum systems
  • Identify the differences in ASME and ISO drawings

Who Should Attend

This course is valuable for individuals who work with ISO standards on drawings, designers, engineers, inspectors, and machinists.


In order to understand the course content, students should have a basic understanding of Y14.5 Dimensioning and Tolerancing practices.

Standards and Technical Drawings

  • Importance of standards
  • ASME and ISO organizations
  • Stages of standard development
  • Major differences in scope of standards

Advantages and Cautions

  • Why each standard should be used
  • ISO GPS concept
  • Three domains of ISO specifications
  • Comparing ASME and ISO GPS systems
  • Five cautions when using ASME standards
  • Six cautions when using ISO standards

Technical Drawing Presentation Differences

  • Technical drawing standards
  • Items that are the same in both standards
  • View projection methods
  • Dimensioning termination and presentation methods
  • Dimensioning symbols
  • Angular tolerance interpretation
  • Workpiece edge requirements and general tolerance specification
  • Size dimensions and limits and fits expressions
  • Surface texture is specification

Tolerancing Term Differences

  • Feature and feature of size
  • Envelope requirement and independency principle
  • Eight major terms
  • Bonus tolerance and collective requirement

Datum System Differences

  • Datum specifications
  • Datum interpretations
  • Candidate and single solution datums
  • Datum target specifications

Geometric Tolerancing Symbol Differences

  • Specification / use for each geometric tolerance symbol
  • Interpretation for each geometrical tolerance
  • Specification / use for modifiers and symbols

ASME and ISO Drawing Differences

  • Applicable standards
  • Drawing symbol differences
  • Geometrical tolerance specification and interpretation differences

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.

ID# ET2025 - ASME to ISO Standards Comparison 1-Day - 0.7 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

Fee: Call for pricing

This seminar can be customized to meet the needs of your organization
For onsite workshop information — or to request a custom quote package — contact a GD&T account executive at 1-800-886-0909, email, or use our online training quote request form.


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This file last modified 02/06/18