First published in Australia as AS 1660.1-1974.Second edition 1986.Third edition 1993.Jointly revised and designated AS/NZS 1660.1:1998.Reconfirmed 2017. Originated as AS 1660.1-1974. Previous edition in Australia AS 1660.1-1993. Jointly revised and designated AS/NZS 1660.1:1998.