Technician A says that a reading of one psi on a pressure gauge is equal to approximately 2-inches of Hg (mercury) measured on a manometer. Technician B says that one inch of Hg is equivalent to approximately 2-inches of H20 on a manometer. Who is correct?

A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B


Answer: A

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