What was Leonardo da Vinci’s human-shaped mechanical automaton commonly called?

Leonardo da Vinci’s human-shaped mechanical automaton is commonly called the mechanical knight.

Leonardo designed the figure around 1495 for a pageant at the court of Ludovico Sforza in Milan. The machine was concealed inside a suit of armor and used cables, pulleys, and gears to imitate human actions. Reconstructions based on Leonardo’s drawings indicate that it could move its arms, raise its visor, and turn its head.

The original machine has not survived, so details of its performance come from notebook evidence and modern interpretation. In 2002, roboticist Mark Rosheim built a functioning model based on Leonardo’s plans. That reconstruction helped show that the sketches describe a plausible mechanical system rather than a purely decorative costume.

The automaton was not a robot in the modern electronic sense. It had no computer, sensors, or electric motor. Its significance is that Renaissance mechanical engineering could create coordinated, programmable-looking movement using carefully arranged mechanical parts.