Ratio of Centimetre to Inch


PROF. BOYS' letter on p. 439 (March 12), reminds me that I have never seen stated a very simple approximate relation between centimetres and inches, viz. 33 to 13, which is correct to one part in 1700.

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LODGE, O. Ratio of Centimetre to Inch. Nature 43, 463 (1891). https://doi.org/10.1038/043463e0

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