Show measures pressure of blood Dahl more noie md an instrument long needed by the medical profession for measuring blood pressure has ficen bean invented by dr D R I 1 looker hooker of johns Il university and 1 A I kyster of tile university of VIrg virginia virginea the now new instrument consists of a small glass box containing a rubber bag this Is attached to the wrist of the patient directly over tho vein the box is connected by a tube to a water manometer to which la Is attached a rubber bulb by squeezing this athla bulb pressure Is exerted on the vein when this vein Is seen to collapse the ho pressure which Is s transmitted to the lie manometer may be road read |