Did you guess the invention right? It’s an odometer! While not much is known about how and when the first odometer was invented, we do know from ancient historical records that Alexander the Great was concerned about measuring the distance he travelled and - most probably - conquered. With the odometer, the Macedonian king was able to achieve more accurate measurements of the distance covered. A most interesting lesson in science AND history! Find out more about ancient Greek inventions at #Scie