Bianco world map
The Bianco World Map is a map created by Andrea Bianco, a 15th-century Venetian sailor and cartographer. This map was a part of a nautical atlas including ten pages made of vellum (each measuring 26 × 38 cm). These vellum pages were previously held in an 18th-century binding, but the current owner, Venetian library Biblioteca Marciana, separated the pages for individual exhibition.
To confirm his authorship of the atlas, Bianco added to the first page a signature flag with the text "Andreas Biancho de Veneciis me fecit M cccc xxx vj". Roughly translated, this reads "Made by me Andreas Biancho in Venice, 1436."
The first page, or Tavola 1, shows a diagram of the Raxon or Toleta of Marteloio, a navigational technique that enabled sailors to calculate how to return to their intended course after being blown off-course. The next eight pages contain seven local and one Europe-wide Portolan charts. The ninth page contains a circular world map measuring 24 cm in circumference. The final page illustrates a Ptolemaic world map based upon Ptolemy's first projection with a graduation of the latitudes. The map also contains two different estimates of the size of the world sphere.
- "Atlante nautico (1436)".(1993) edited by Piero Falchetta, Arsenale Editrice srl, Venezia. ISBN 88-7743-135-0 This book is a special edition for the Banco San Marco and was a limited edition of 1500 copies. The Biblioteca Marciana has made the text and 10 Tavola's available as ARCHIweb-Risultati Ricerca::Family 029110.
- Venezia, Biblioteca Nazionale Marciana di. "Geoweb :: Biblioteca Nazionale Marciana - Venezia. Pagina di benvenuto". geoweb.venezia.sbn.it (in Italian). Retrieved 2018-09-30.