The anemometer is another popularly proclaimed da Vinci invention that most likely isn't, but was well documented, and perhaps improved on by him. This is called a plate style anemometer and more likely credit belong to Leon Alberti. Leonardo actually refers to Alberti's anemometer in his notebooks.

"A device for measuring the force of the wind by reading on the quadrant scale the highest point to which the vane, hinged at the top, is blown.

Post printing 
1. glue cradle to the base

2. glue head to the cradle

3. Attach needle to the head by bending and cutting as piece of filament and using it as a shaft

4. Use a permanent marker to highlight measurement lines