Well, I'm no expert but that appears to be your basic highly-accurate
home-made manometer. When pressure is applied to one side, it goes down
while the other side goes up. As I understand it, you take the distance
the one went down and add it to the distance the other went up to get
the fluid height. So 5 inches + 5 inches = 10 inches . . .

Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR

On 7/31/2007 12:25 PM neil N wrote:

> Hi all.
>
> Here's the pic:
>
> http://web.mac.com/tubaneil/iWeb/Site%205/WaterColumn.html
>
> question:
>
> if water goes up LH side of hose app 5" , then double that = the total
> output of a given pressure regulator?
>
> I thought the LH side would go up 11" or so, but it only moved 5-6".
>
> FWIW,  I bled the line near the connection (via vent hole on hose) til
> I smelled LP.
>
> Any answers and/or critiques regarding my test method/tester are welcome!
>
> Neil.
>
> --
> Neil Nicholson. 1981 Air Cooled Westfalia.
>
> http://web.mac.com/tubaneil
>