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Description of BS 2045:1965 1965Details 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more rounded values of preferred numbers, together with a general introduction to the subject (based on BS 1638, now withdrawn) and guidance in the use of preferred numbers and series of preferred numbers.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.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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