AS/NZS 2053.7 first published in Australia as part of AS C66.1-1955.AS C90 first published 1963.AS C66.1-1955 and AS C90-1963 revised, amalgamated and redesignated as AS 2052-1977.First published in New Zealand in part as NZS 127:1949 (Being BS 31:1940 endorsed with amendment).NZS 6221.1 first published 1972 (Being BS 4568.1:1970 endorsed with amendment).NZS 6221.2 first published 1972 (Being BS 4568.2:1970 with amendment).AS 2052-1977, NZS 127:1949, NZS 6221.1:1972 and NZS 6221.2:1972 jointly revised, amalgamated and redesignated in part as AS/NZS 2053.7:1995.Second edition AS/NZS 2053.7:2002.Reconfirmed 2016. Originated in Australia as part of AS C66.1-1955 and AS C90-1963. Originated in New Zealand as part of NZS 127:1949, NZS 6221.1:1972 and NZS 6221.2:1972. Previous edition AS/NZS 2053.7:1995. Second edition AS/NZS 2053.7:2002.