Manual Blood Pressure Machine

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 manometer to measure the pressure. Manual sphygmomanometers are used with a stethoscope when using the auscultatory technique.
A Riester sphygmomanometer consists of an inflatable cuff, a measuring unit (the mercury manometer, or aneroid gauge), and a mechanism for inflation which may be a manually operated bulb, It uses mercury.