First published in Australia in part as AS C154-1958 AS C173 first published 1964.AS C175 first published 1967.AS C183 first published 1970.AS C154-1958, AS C173-1964, AS C175-1967 and AS C183-1970 revised, amalgamated and redesignated AS 2053-1977.Second edition 1980.Third edition 1984.First published in New Zealand in part as NZS 2250.1:1969.NZS 2250.2 first published 1970.NZS 2250.1:1969 and NZS 2250.2:1970 revised, amalgamated and redesignated NZS 6207:1982.AS 2053-1984 and NZS 6207:1982 jointly revised, amalgamated and redesignated in part as AS/NZS 2053.2:1995.Second edition 2001.Reconfirmed 2016. Originated in Australia in part as AS C154-1958, AS C173-1964, AS C175-1967 and AS C183-1970. Originated in New Zealand in part as NZS 2250.1:1969. Previous edition AS/NZS 2053.2:1995. Second edition 2001.