mid 19th Century, French, shaped brass base with two bubble levels, signed 'Santi A Marseille', with latitudes of towns Marseille 17 (error), Paris 48.51, Londres 52, Lima 12, Algier 37, Constantinople 41, with a further 12 town latitudes on the compass base, silvered compass rose with 16 points and outer ring divided to one degree, latitude arc divided to one degree, the hour ring divided to quarter hours Note: Missing three levelling screws, otherwise complete.