"Chris Selwyn-Smith" writes:

http://www.navitron.org.uk/

Products costing a grand or so with no hint of any techinical data
like say dimensions or links to data offsite.

Actually there is a url, which has to be pasted manually, for hydro
turbines but it is invalid.

Go to the contact page and it says something about a Suburban Griller
but not who these people are.

Jon