Comment on Torricelli’s experiment & barometers by Toby

Hello, I am trying to modify the Torricelli’s experiment part to make a measuring cylinder. I have managed to do the following: % TUBE \draw[vertical water] (-\rx,\h) |-++ (2*\rx,\ty) –++ (0,-\ty); \draw[water] (0,\h+\ty) ellipse ({\rx} and {\ry}); \draw[thick,line cap=round] (-\rx,\h) –++...