Hot wire anemometer circuit boards?

I try to find hot wire anemometer circuit board, which can get wind speed without any moving parts.

Few years ago i saw such a circuit board.

Anybody know what companies make sensors like this and where to buy from Europe?

seen this anemometer - -??

google - hot wire anemometer file:pdf - to get lots of info on hot wire ones sells a couple of "hot wire" wind sensors, but they are extremely difficult to calibrate. Basically, you need a temperature controlled wind tunnel.