While he was a good geodesist and a talented cartographer, Cassini III was only a second-rate astronomer; and the name of this third representative of the Cassini dynasty at the Paris Observatory will remain associated with the first map of France produced according to modern principles.
Habang siya ay isang magandang geodesist at ng mahuhusay na kartograper, Cassini III ay lamang ng isang pangalawang-rate astronomer; at ang pangalan ng ito ikatlong kinatawan ng Cassini dinastya sa Paris obserbatoryo ay mananatiling kaugnay sa unang Pransiya mapa ng ginawa ayon sa makabagong prinsipyo .