Uh! com-n Vance....
A sight gauge is simply a "window" or "windows" that are
cut on the side of liquid holding containers for level
viewing and as long as they "share" the same ambient
venting they will read identical levels. Otherwise it
becomes a manometer.

This is why the basic physics LAW..."Fluids will seek
their own levels". Anybody care to argue with the laws
of physics"?
                                 Butch Diaz Sr.

 
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