1. Problems encountered with current standards

For many years, GPS standards were prepared and published by technical committees (ISO/TC 3 "Fitting", ISO/TC 10/SC5 "Dimensioning and tolerancing", and ISO/TC 57 "Metrology and surface properties") as and when specific needs arose, but without a global vision. This has resulted in standards with different approaches and presentations, and sometimes even contradictions. There are also gaps between these standards.

Aware of this, an ISO/TC 213 technical committee on "Dimensional and geometrical product specification and verification" was set up to ensure a convergence of views between the various players. It...