This bridge would lower across a moat and soldiers would then cross. The bridge would be operated by a rope and pulley system which would make it easy to take down and set up. Now this device is used in big cities or areas where big ships pass under these bridges.
As for one of Leonardo’s memorable work, the Vitruvian Man. This drawing has two male figures lied on top on one another with shading and markings on the bodies servings as identification points and as to show the details of the muscles and joint location correct to the human anatomy. Surrounding the bodies is a circle and square to show the body’s geometric proportions. The Vitruvian Man was not the only of its kind.
Leonardo’s inventions were very beneficial to society but one of his most famous and still used invention was his work on the human anatomy. According to Alastair Sooke, a man who writes about art and history documents for BBC television, said these pages were,”full of lucid insights of the function of the body.” For Leonardo to get these drawings accurate he would steal bodies and or impersonate someone who retrieve dead bodies and then cut them up one thin slice at a time and then write down every detail on a separate piece of paper. These illustrations were so accurate that doctors interested in anatomy would look at these pieces of work. Still these pieces of work are used today. Leonardo’s work is in every Grey’s Anatomy medical book because of how accurate these drawings