An inclined manometer similar to the one shown in Figure 3.14 is used for sensitive pressure measurement. It is inclined at an angle of 25 degrees above the horizontal and uses red gage fluid with a specific gravity of 0.826. How far apart should the marks along the inclined tube be to indicate a pressure of €œone inch of water€?

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INCHES OF WATER 0 10 20 40 80 90 L...I. DWYR NSRNENS NC CMION Or as ca a.cL GEAN WISMAPAV Duyer Measured Vent pressure Scale, (b)