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ISO/PWI 5459

Geometrical product specifications (GPS) — Geometrical tolerancing — Datums and datum systems

General information

00.00     17 mar 2025

ISO

ISO/TC 213

International Standard

Scope

This document specifies terminology, rules and methodology for the indication and understanding of datums and datum systems in technical product documentation. This document also provides explanations to assist the user in understanding the concepts involved.
This document defines the specification operator (see ISO 17450-2) used to establish a datum or datum system. The verification operator (see ISO 17450-2) can take different forms (physically or mathematically) and is not the subject of this document.
NOTE            The detailed rules for maximum and least material requirements for datums are given in ISO 2692.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 5459:2024

NOW

IN_DEVELOPMENT
ISO/PWI 5459
00.00 Proposal for new project received
17 mar 2025