X-Mozilla-Keys:                                                                                 

If you all are looking for an easy way to measure pressure, I use a dual
Magnehelic gauge to measure pressures-look in Grainger, diff ranges of "
water, cost <$100. Put one end of tube in front of cooler, one in rear. Run
to cockpit, take diff reading in diff attitudes/speeds.
These are used to "balance" airflow in HVAC systems in buildings.
Marc

They are great Marc. Used a lot of them myself. A water manometer
is free by comparison and you get at least half a dozen on one piece
of plywood. I have used Poloroid cameras to record the manometer values.

Paul Lamar
 
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