ISO 1101, Geometrical product specifications (GPS) – Geometrical tolerancing – Tolerances of form, orientation, location and run-out, has just been updated. The new 2017 Edition is available from Document Center Inc. now. It is an important part of the ISO GPS Masterplan from ISO 14638. As noted in the title, it is the geometrical tolerancing standard for form, orientation, location and run-out (chain of standards links A, B and C).
This document provides you with a symbol language you’ll use when specifying ‘workpieces’ geometrically. You may think of these as technical drawings. The symbols can be used for both 2D and 3D representations. In many ways, the document, and the family of standards it is part of, are very much like the ASME Y14 series of standards.
The new 2017 4th Edition of ISO 1101 replaces the 3rd Edition from 2012. It is a technical update and has changes in critical parts of the standard. For example, there have been a number of tools added. These are for:
- filtering of the toleranced feature and a line type
- tolerance associated features
- specifying form characteristics
- specifying the constraints to the tolerance zone
Additional changes include:
- clarification of rules regarding the use of ‘all around’ or ‘all over’ modifiers
- tolerance zone directions in some specific cases
- the introduction of a ‘between’ symbol to replace the now-obsolete ‘from-to’ one.
Other change occur throughout the publication.
Document Center Inc. is an authorized distributor of all ISO standards. You can search for and order them at our webstore, www.document-center.com. Here is a direct link to the order page for ISO 1101. You will be able to purchase it online in either paper format or for pdf download. Other options are available.
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