The sphygmomanometer was described by the manuals as difficult to use and understand, and only stopped being the exclusive domain of doctors after it was sufficiently simplified and health care professionals were trained how to use it.
Este objeto se presentaba en los manuales como de difícil uso y comprensión. Sólo cuando se simplificó lo suficiente para ser de la práctica médica, se formó a los profesionales del cuidado para usarlo.