Map of Great Britain and Ireland. Copperplate engraving, non-contemporary hand colored. 14" x 9 3/4". Five scales of distance on upper right. Prime meridian through Paris. Cartographer: Rigobert Bonne. In 1773, Rigobert Bonne (1727-1795) was appointed Royal Cartographer to France in the office of the Hydrographer at the Depot de la Marine.  His attention to detail and accuracy along with his practical aesthetics were a departure from the decorative and artistic cartography of the 17th and early 18th century and made him one of the most important map makers of the modern era.