Abstract: A conveniently hand held self-contained electronic manometer assembly small enough to be held in the palm of one hand comprises a structure having a pressure sensor arranged to be exposed to a site at which there is pressure to be monitored, and an electronic system carried by the structure translates pressure sensed by the sensor into a digital display carried by the structure. The structure may also carry a pressure modulating device such as a digital pump and pressure relief valve or a syringe arrangement.