BS 2045:1965

Cooperating organizations
Foreword
Introduction
1. Scope
Part 1. Preferred numbers
2. Derivation
3. Nomenclature and definitions
4. Designation
5. Series of preferred numbers
Part 2. Guidance in the use of preferred numbers and
series of preferred numbers
6. Choice of series
7. More rounded values of preferred numbers
Tables
1. Basic series of preferred numbers
2. Derivation of basic series
3. R80 series of preferred numbers for exceptional use
4. More rounded values of preferred numbers
Appendices
A. International examples of the use of preferred
     numbers
B. Recommendations for calculating with preferred
     numbers

Details of the R5, R10, R20, R40 and R80 series and of the more rounded values of preferred numbers, together with a general introduction to the subject (based on BS 1638, now withdrawn) and guidance in the use of preferred numbers and series of preferred numbers. International examples of the use of preferred numbers and recommendations for calculating with them are appended.