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Finn Lassen wrote:
Only vaugely rotary related...
I'm driving myself nuts trying to build this thing level to within 1/8 to 1/4" !
I'm using a gardenhose, terminating in clear PVC tubing at each end, to get reference points at the four corners.
The thing is that the level varies 1/2" or more over hours. One end will be up, 1/2" over where it was an hour ago and the other end down. Then it changes, etc. How can a guy get a reliable reading this way?
Is the friction in the hose too big to reliably use this as a level?
Do I need to terminate each end in funnels to get bigger ambient pressure?
Finn
(frustrated)
1) I remember Shady Bend being really windy. Wouldn't take much pressure differential at all to get 1/2" variance. Maybe try capping the ends of the tubes and drilling static ports around the side?
2) I used 1/4" tubing as a water level myself. With a garden hose, maybe you've got so much water in there that it has its own tidal effects.
3) 1/2"!! Home builders around here call it good if it is withing shouting distance!
--
,|"|"|, Ernest Christley |
----===<{{(oQo)}}>===---- Dyke Delta Builder |
o| d |o http://ernest.isa-geek.org |
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