These instruments have been created by following Leonard da Vinci's designs.    

Force regulator
Mechanism designed to regulate the force of a spring motor, a system equivalent to the chain and fusee assembly used in clockworks.
1995   36 cm ´ 24 cm ´ 48 cm.
Steel, brass and ebony .

 detail
   
Continuous movement
Mechanism showing how to transform continuous movement into alternating movement.
1990   50 cm ´ 35 cm ´ 44 cm.
Steel, brass and oak
Conservatoire des Arts et Métiers, Paris .		 detail
   
Odometer
An instrument to measure distance covered. At each turn of the wheel, a small ball drops into the cup.
1996   140 cm ´ 70 cm ´ 52 cm.
Steel, brass and ash
Conservatoire des Arts et Métiers, Paris 		detail