Some of the key ISO/TC 213 standards 

ISO/TC 213 has published 145 standards since the committee's creation in 1996. 

For the full list of published standards, see the link  "Complete list of published standards" on the Projects page. 

The information below relates so some of the key ISO/TC 213 standards and how they can help you in your implementation of the ISO GPS system. 


ISO 1101:2017 and ISO 1660:2017

ISO 1101, Geometrical product specifications (GPS) -- Geometrical tolerancing -- Tolerances of form, orientation, location and run-out

ISO 1660, Geometrical product specifications (GPS) -- Geometrical tolerancing -- Profile tolerancing  

As the requirements of manufactured products become ever more demanding, the need to be able to define those requirements precisely, completely and unambiguously becomes ever more crucial. The ISO system of Geometrical Product Specification & Verification has been developed over the last 20 years, and is still evolving today, to meet this need.

While the complete system is defined across a number of interlinked international standards, there are certain standards which are of paramount importance to industry, and the latest revision of two of these have now been published; ISO 1101 for geometrical tolerancing and ISO 1660 for profile tolerancing.

The latest versions are the most comprehensive versions of these standards to date.

Benefits of working with these standards include:

  • The ability to define tolerance requirements more precisely than ever before
  • The facility to tolerance all the critical properties of almost any conceivable type of feature
  • The opportunity to define filtration requirements


ISO 5459:2011, Geometrical product specifications (GPS) -- Geometrical tolerancing -- Datums and datum systems

ISO 5459 specifies terminology, rules and methodology for the indication and understanding of datums and datum systems in technical product documentation.

The document  provides explanations to assist the user in understanding the concepts involved.

It also provides tools to express location or orientation constraints, or both, for a tolerance zone.