Manual blood pressure machine (sphygmomanometer) is a non-electronic device used to measure blood pressure. It features three main parts: an inflatable arm cuff, a hand-operated rubber bulb to pump air and control release, and an aneroid gauge (dial) or mercury column to display pressure. It requires a stethoscope to manually listen to blood flow.Key ComponentsInflatable Cuff: Wrapped around the upper arm, it temporarily restricts blood flow when inflated.Aneroid Gauge: A mechanical dial marked in millimeters of mercury (mmHg) that tracks the exact pressure inside the cuff.Inflation Bulb & Valve: