To reach the top of the wall of an enemy fortress, Leonardo da Vinci designed this scaling ladder in a form similar to that employed today in fire-fighting apparatus. It is elevated and lowered by means of the crank and the large toothed gear.
To reach the top of the wall of an enemy fortress, Leonardo da Vinci designed this scaling ladder in a form similar to that employed today in fire-fighting apparatus. It is elevated and lowered by means of the crank and the large toothed gear.