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ISO 3:1973

Preferred numbers — Series of preferred numbers

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 3:1973
Document Year: 1973
Pages: 4
Edition: 1
  • Section Volume:
  • ISO/TC 19. Preferred numbers - STANDBY
  • ICS:
  • 17.020 Metrology and measurement in general

Life Cycle

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ISO 3:1973
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