ISO INTERNATIONAL STANDARD 230-4 Third edition 2022-02 Test code for machine tools Part 4: Circular tests for numerically controlled machine tools Code d'essai des machines-outils - Partie 4: Essais de circularité des machines-outils a commande numérique Reference number IS0 230-4:2022(E) ISO @IS02022 IS0 230-4:2022(E) COPYRIGHT PROTECTED DOCUMENT IS02022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may the internet or an intranet, withoutpriorwrittenpermission.Permission can be requested from eitherIso at the addressbelow or Iso's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214Vernier,Geneva Phone: +4122 749 0111 Email: copyright@iso.org Website: www.iso.org PublishedinSwitzerland i @ IS0 2022 - All rights reserved