A chart depicting the hour circles, tropics and the polar circle

Title: [Antique celestial chart] Colures, Tropiques, Cercles Polaires, et leurs usages
Author: Buy de Mornas, Cl.
PlaceAndYear: Paris, L.C. Desnos,1761.
Description: Claude Buy de Mornas (d. 1783), geographe du roi (1764). Atlas Methodique et Elementaire de Geographie et d' Histoire, 1761, Atlas Historique et Geographique, 1762. A chart depicting the hour circles, tropics and the polar circles and their applications. With on both sides a descriptionary text. All within an elaborate and very decorative border. A very fine item.
Dimensions: 400 x 550 mm
Colouring: original colouring
Condition: very good condition.