Before revision: History The Kelvin machine The first tide predicting machine , designed in 1872 and of which a model was exhibited at the British Association meeting in 1873See Proceedings of the Inst.C.E.
After revision: (TPM)History The Kelvin machine The first tide predicting machine , designed in 1872 and of which a model was exhibited at the British Association meeting in 1873See Proceedings of the Inst.C.E.