Cartographic Details: Scale approximately 1:15 500 000."Approved by the chart committee of the Admiralty." Inset: Anemo-hydrography of the monsoons according to Viconte Grenier. Map of Indian Ocean and Western Pacific showing tracks of various navigators, dates of discoveries, with relief shown pictorially. 59 x 112 centimeters Scale approximately 1:15 500 000 Ames Library of South Asia Maps