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made by a cambridge Reverend, stephen Hales, in 1733. he measured blood pressure by inserting the end of a long glass tube into the carotid artery of a horse and noting that the blood came up the tube to a height of nine feet eight inches, which was the blood pressure of the horse3 made by a Cambridge Reverend, Stephen Hales, in 1733. He measured blood pressure by inserting the end of a long glass tube into the carotid artery of a horse and noting that the blood came up the tube to a height of nine feet eight inches, which was the blood pressure of the horse
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