First published as part of AS C67-1939.
AS C67 Supplement 1 first published 1947.
AS C67-1939 and AS C67 Supp1-1947 revised and redesignated as AS C67-1963.
AS C67-1963 revised and redesignated in part as AS 1137.1-1972.
Second edition AS 1137.1-1981.
AS 1137.1-1981 revised and redesignated in part as AS 2947.2-1989.
AS 2947.2-1989 jointly revised and designated as AS/NZS 2947.2:2002.
Revised and redesignated in part as AS IEC 60720-2007.
Reconfirmed 2018. Originated as part of AS C67-1939. Previous edition AS/NZS 2947.2:2002. Revised and redesignated in part as AS IEC 60720-2007.