The pressure is measured at three points along the tube. Rubber pipes are attached at the two ends. The ends of tube are kept high enough so that the water will not flow to show that the level is the same in all the manometers under static conditions. This apparatus consists of a water reservoir and a Venturi tube with manometers...

The sturdy borosilicate venture tube is a great way to visually and kinesthetically study the measurement of flowing liquid. It is very useful in demonstrating and observing the Bernoulli principle (fast flowing liquid exerts less pressure on its surroundings than slow flowing liquid does). Similar devices fine extensive application in everything f..