This is still another project using a manometer. We will set it up just as before, and we will, again, use the aquarium filled with water.

This time, since a hand changes the depth measurement of the water, we will tape the funnel to a thin ruler (or any other thin, narrow strip of wood). Lower the funnel, and we'll put a bit of tape on the side of the aquarium to mark the depth of the funnel.

Now, keeping the funnel at the same depth, turn it, by turning the ruler in all directions, and watch the tube. As you turn the funnel, does the level change in the tube? If
not, that means that the pressure of the water is the same no matter which direction the funnel is facing, as long as it is at the same depth.