Hi Ed,

The sensor I used does not have your traditional cylindrical shape.
Just to have an idea of the way it looks go here:
http://www.jets24.com/bombardier-brp...m_store=german
Also if you search Sea-Doo part 278001998 you might find more pictures to get a better idea. A view from the oposite side will give you more information.
The paddle wheel is about 1 ¼” diameter. The mounting plate is about 2”x5” but you can cut most of it off. With a little creative engineering you can hide most of the body and expose only the tips of the paddles.
It is used but in working order. I will send you pictures in a few days when I will get back to work.
My offer still stands but it will take few more days until I will be able o mail it to you.

Regards,

Nick