https://drive.google.com/open?id=1QdGeUeXj6EKPK4i3Nn_dP7lKMUkbiisK

Diseño de idefix

In the image you can see "El hombre de Vitruvio " one of the schematics based on the human proportion by Leonardo Da Vinci if you wanna learn more i'll leave you the link below:
http://complotmagazine.com/7-inventos-de-leonardo-da-vinci-que-cambiaron-el-mundo/

This 10 inventions are of the most strangest thing that the human made for money ,for helping people or even some stupid invention that serve for nothing.

This 20 inventions are very interesting because they are invention that we use a lot nowadays in our houses. They're very different now that in the past but see it for yourself.