This standard was last reviewed and confirmed in 2008. Therefore this version remains current.
Preferred numbers are the conventionally rounded of term values of geometrical series, including the integral powers of 10 and having as ratios special factors in accordance with the specified tables. Basic, expectional, R 80 and derived series are designated.
Status : PublishedPublication date : 1973-04
Edition : 1
Technical Committee:Preferred numbers
A standard is reviewed every 5 years
Revisions / Corrigenda
Now under review