Differences between ASME Y14.5-2009 and ISO 1101 GD&T
(Differences ASME and ISO GD&T)

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Quick Guide to the Differences Between ASME Y14.5-2009 and ISO 1101 Geometric Dimensioning and Tolerancing


This course document is free for individuals whom have attended Engineers Edge (Kelly Bramble's) ASME or ISO GD&T seminars.

This module will be available for 60 days after enrolment has been received.

Professional Development Hours (PDH) earned = 0 hours. At this time, no PDH credits are available.

This documents goal is to overview the differences between ASME Y14.5-2009 and ISO 1101 Geometric Dimensioning and Tolerancing (GD&T) standards. The author makes no claim as to which standard may or may not be better or is preferred. Many of the differences are minor however many are not.


  • Standards based on ISO
  • Abbreviations ASME & ISO
  • Abbreviations ISO Only
  • Quick Notes: Differences Between ASME Y14.5-2009 & ISO 1101
  • Common Symbols ISO 1101
  • Common Symbols ASME Y14.5 - 2009
  • Common Symbol Comparison ASME & ISO
  • Geometric Characteric Chart ASME Y14.5 - 2009
  •  Geometrical Characteristics Chart ISO 1101

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Course Author Profile Kelly L Bramble

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