Copper engraving on vellum. One of four copies extant. This chart of the Indian Ocean incorporates the Dutch discoveries in Australia based on Hessel Geritsz' Chart of the Malay Archipelago [1628]. Scale computed from one degree latitude measuring 7,6 mm. This large map carries five wind-roses and two graphic scales: 20 English and French miles or 15 German miles to a degree. Approximate image size 93 x 72 cm