XIR360244 Ms Fr 150 fol.23r Sextant, from \'Les Premieres Oeuvres de Jacques De Vaulx Pilote en la Marine\', 1583 (pen & ink and wash on paper) by Devaulx, Jacques (16th century); Bibliotheque Nationale, Paris, France; (add.info.: with graduated arc of 60 degrees used in navigation and surveying for measuring angular distance of objects by means of mirrors; Jacques de Vaulx was a celebrated pilot of Le Havre;); French, out of copyright.