Stumbled across this for you wind farm modelers. Enjoy.

Video in English.

https://www.youtube.com/watch?v=3U7VN4rRFL4

Video in Deutsch

https://www.youtube.com/watch?v=s124audRZYQ

Link to Ruthmann Steiger Homepage http://www.ruthmann.de/main.php?target=tts8401000_steiger&lang=en

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