A fluid of unknown density is used in two manometer, one sealed end, the other across on orifice in a water pipeline. The reading shown here are obtained on a day when barometric pressure is 756 mmHg.
The pressure point is 8.1 mmHg. There are different types of industries that normally make use of different types of tubes. Their main goal for this is to make sure that various chemicals, especially those that have the potential to be corrosive are housed properly.
Just imagine if corrosive chemicals will just be allowed to go through tubes that are not secure. It might hurt the people who are working in the factory. It is important to know the computation of certain things to ensure that all the things will go according to plan. Careful computation is important to make sure that the place where people work will be safe.