Bill B.
P18 #454, "Dream Catcher"
Nampa, Idaho
> I have seen and used one of these hand held speed indicators. It seems
> to be fairly accurate but with a high freeboard it can be a hassle to
> use. You actually dip the bent opened end into the water with the
> opening facing in the direction the boat is heading. The pressure of the
> passing water forces the ball up into the tube and the top of the water
> level in the tube indicates the speed. The water is then released from
> the tube once you've seen the reading. You don't have to strain to see
> the reading while it is still in the water. Well worth adding to the
> inventory of equipment on a potter 15 but inconvenient on the 19 I would
> think.