The scientific genius of Leonardo da Vinci is brought to life through
this articulated model. The invention that inspired this snap-together
replica is taken from the pages of Da Vinci™s priceless and
awe-inspiring notebooks. All models are made of plastic and require no
special tools. Manuals are very educational and teach how these
inventions have evolved into what they are today.
The Aerial Screw designed by Leonardo da Vinci was a precursor of the
modern day helicopter. The device was designed to compress air in order
to obtain flight. 
