Professional blood pressure meter Accurate Readings Mercurial Scale Desk Type Aluminimum Case with lock Durable Product Best price in the city. A sphygmomanometer, also known as a blood pressure monitor, or blood pressure gauge, is a device used to measure blood pressure, composed of an inflatable cuff to collapse and then release the artery under the cuff in a controlled manner, and a mercury or aneroid manometer to measure the pressure.