Reference number
ISO 3:1973
ISO 3:1973
© ISO 2025
International Standard
ISO 3:1973
Preferred numbers — Series of preferred numbers
Edition 1
1973-04
1973-04
ISO 3:1973
3564
Published
(Edition 1, 1973)
This publication was last reviewed and confirmed in 2020.
Therefore this version remains current.
Abstract
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.