mercury gauge meaning in Hindi

Examples

1. There are several alternatives to the mercury gauges, all producing the familiar numerical readings of pressure when the heart beats and when it rests between beats.
2. But leading medical experts, joined by the American Heart Association and the National Heart, Lung, and Blood Institute, say the mercury gauges are being replaced by newer devices that may be unreliable, and they warn that inaccuracies may be leading to false diagnoses and inappropriate treatments.