Multifluid Manometer: Practical Uses & Benefits

[Pandris]

Hi!

I came up to some problems involving multifluid manometers, which generally are U-tubes or double U-tubes with stacked immiscible fluids.
I wonder what is the reason to use such systems? Are they just a product of teachers to artificially complicate problems? Couldn't find anything what could explain practical reasons of such devices.

Thanks!

 

[Dadface]

The U shaped manometer is a cheap and effective way of measuring pressure.If you pour two immiscible liquids of different densities into a manometer then you can easily compare the densities by measuring the heights above the interface of the two liquid columns