Frosty in Vienna

Recently returned from the ISO TC213 conference in Vienna. Vienna was beautiful, but bloody cold.

Some useful progress was made in some of the working groups.

WG17, which I chair, has been given the task of updating a document which has the vaguely threatening title of 'ISO/TR 14638 - GPS Masterplan'. This document maps out the structure of the entire ISO GPS system, and describes how the different standards relate to each other.

The document has not been touched for about 15 years, and is very hard to understand, so there is quite a lot of work to do. In fact, most of the 'up-date' will probably involve redrafting large sections of the text just to try and make it comprehensible.

In the previous TC213 series of meetings in San Antonio, a new study group was set up to map out the differences between the ISO GPS system, and the American ASME Y14.5 standard. The study group is jointly led by Archie Anderson of the USA, who oversaw the development of Y14.5 for many years, and Renald Vincent of France, who has played a major role in the development of GPS over recent years.

Meeting again in Vienna, we have now mapped out a structure for the comparison, and can start to fill in some of the detail. I think that this could potentially be a very useful study, as the differences are not always well understood, and organisations in many areas of industry are having to work with both systems.

WG 18, which deals with the geometrical tolerancing standards, was a much patchier affair. Too many new options and possibilities being introduced, and not enough progress on sorting out what we already have.