Last year we started producing an accurate (+/-1%) and affordable anemometer and data logger system that is very easy to set up.
The anemometer & wind data logger kit is designed to accurately evaluate a locations viability for wind energy, to prevent a consumer from waisting his money and resources or to verify that his expensive wind turbine placement is effective.
It enables a consumer to reliably know whether he/she has enough wind to make a wind turbine installation viable.
To this effect, 3% or 5% measurement errors found in most anemometers can lead to large errors (9.3% and 15.8%) in available wind power estimates. Our anemometer features a wind tunnel verified 1% accuracy in the wind energy wind speed range (5-28m/s) for a price of $300USD while most wind data logging systems of this accuracy cost in excess of $500 USD.
I hope I answered you question satisfactorily.
Here are links to more product details and pictures:
Please let me know if you have further questions or would like more info,