Preferred numbers — Series of preferred numbers
NORMA vydaná dňa 1.4.1973
Označenie normy: ISO 3:1973
Dátum vydania normy: 1.4.1973
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / 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.