Baeton

Baeton was a man of ancient Macedonia who lived in the 4th century BCE. He was a contemporary of Alexander the Great, and participated in his campaigns, with his colleague, as a bematist or "road engineer", that is, someone who measures distances in his marches.
He wrote a work upon the subject entitled The Stations of Alexander's March. Aside from a couple of stray quotes in the Natural [History |Natural History] of Pliny the Elder, and the Deipnosophistae of Athenaeus, this work is lost, and no record exists of its contents. Pliny mentions that a copy of the surveys of Baeton and Diognetus was given by Zenobius, treasurer of Alexander the Great, to the geographer Patrocles.