This is constructed from Leonardo's designs. It is a crank operated cart. Leonardo's engineering instincts were put to work either improving an existing technology or creating something entirely new.
His odometer is a variation based on a Roman device.
These are models of two cranes, the lateral winch crane and the crane on a cart. Both were Leonardo's takes on existing technologies being used in construction at the time.
Another one of Leonardo's designs took an existing form of crane and improved on it. This is the annular platform crane in model scale.
One of his concepts on paper was a pyramidical parachute. It has been tested in the current day and shown to be sound. Leonardo's quote on the wall rings true.
Here we have the ancestor of the current day helicopter, the aerial screw, a concept designed by Leonardo that probably never could have flown.
Several of the reproductions were things you could get your hands on and try out. This is a hammer, driven by an eccentric cam, according to the display. Leonardo developed the concept to help blacksmiths in their work; the machine drives the hammer down with full force on the anvil.