Papercraft Leonardo da Vinci anemometer (wind meter)

Leonardo da Vinci's "anemometer" from the 15th century can tell you both the direction the wind is blowing, and how hard. ;o)

Download + build your own papercraft Leonardo da Vinci anemometer (+lots more, by

PaperPino):

http://www.paperpino.net/leonardos-anemometer/