BS EN ISO 5459:2011 BSI Standards Publication Geometrical product specifications (GPS)- Geometrical tolerancing Datums and datum systems (1S05459:2011) NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raising standards worldwide" BSi BS EN ISO 5459:2011 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN ISO 5459:2011. It supersedes BS ISO 5459:1981 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee TDW/4,Technical Product Realization. A list of organizations represented on this mittee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract.Users are responsible for its correct application. BS12011 ISBN9780580534812 1C501.100.20;17.040.10 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011. Amendments issued since publication Date Text affected EUROPEAN STANDARD EN ISO 5459 NORME EUROPEENNE EUROPAISCHE NORM August 2011 1CS01.100.20:17.040.10 English Ver...