sphygmomanometer

Etymology

sphygmo- (“pulse”) + manometer

noun

1. A device used to measure blood pressure.
   Sphygmomanometer. — Very recently, Professor S. von Basch has introduced* an instrument, to which he gives the above name, for the purpose of estimating the blood-pressure in the human subject, and which has undoubtedly considerable clinical value. 1882, J. Graham Brown, Medical diagnosis
   Diagnostic monitoring of the pulse became linked to study of blood pressure, for which the sphygmomanometer was devised. 1997, Roy Porter, The Greatest Benefit to Mankind, Folio Society, published 2016, page 332