 César-François Cassini de Thury

César-François Cassini de Thury (1714–1784) was a notable French astronomer and cartographer, recognized for his contributions to geodesy and the development of topographic maps. He was part of the Cassini family, a prominent dynasty of astronomers in France. Cassini de Thury is particularly known for his work on the triangulation of France, which involved measuring large distances across the country to create more accurate maps.