2353. As shown in the illustration, the gage labeled «C» contains mercury and both devices «B» and «D» indicate 'zero' units when exposed to atmospheric pressure. If the pressure indicated on «A» is 16.2 psia, the corresponding readings of the gages «B», and «D», and the height «H» for device «C» should be __________

Gauge B and device D indicate gauge pressure, which is the absolute pressure minus atmospheric pressure (14.7 psia). This results in a gauge pressure of 1.5 psig for B, corresponding to approximately 41.59 inches of water for D. The mercury manometer C measures the same pressure difference, resulting in a height of 3 inches.