Manometer. The vertical pipe shown contains oil of 0.90 specific gravity (relative density). A pressure gage is attached to the pipe as well as an open-end manometer filled with mercury (13.57 specific gravity). For a static oil in the pipe, calculate the pressure gage reading if h1=3m and h2=375mm. [water=999kg/m3;g=9.81m/s2.] Ans. 23.4kPa