First published as part of AS Int 306-1948.Revised and redesignated in part as AS A87-1963 and AS 1346-1973.AS A87-1963 revised and redesignated AS 1500-1974.AS 1346-1973 and AS 1500-1974 revised, amalgamated and redesignated as AS 2733-1984.Jointly revised asnd redesignated in part as AS/NZS 4456.16:1997.Second edition 2003. Originated as Part of AS A140-1964. Previous edition AS/NZS 4456.16:1997. Second edition 2003. Reissued incorporating Amendment No. 1 (August 2004)