Ring warsa 79 gambar bumi saking Prancis olih J. L. Dupain Triel ngawigunayang garis ring interval 20 meter, hachures, ketinggian titik, miwah paduman vertikal.
In 1791, a map of France by J. L. Dupain-Triel used contour lines at 20-metre intervals, hachures, spot-heights and a vertical section.