Question

what do sphygmomanometers have in it

Answer 1

A sphygmomanometer is a medical instrument used to measure arterial blood pressure. It consists of a pump, dial, cuff and a valve. To measure blood pressure, the cuff is wrapped around the arm and then inflated using the pump.

Answer 2

Answer:

Manual sphygmomanometers are used with a stethoscope when using the auscultatory technique. A 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 and valve or a pump operated electrically.