Lot Essay
Despite any conclusive documentary evidence, six models of barometer can confidently be attributed to André-Charles Boulle on the basis of comparison with his known clock models (J.N. Ronfort, op. cit.). The design of this model, known as a baromètre à pyramide is related to Jean Bérain's published designs, such as that for a Pendule aux Harpies (op.cit., vol.I, fig. 1.15.1). The example in the Musée des Techniques was seized during the Revolution from M. Lenoir du Breuil and another is in the Jones Collection at the Victoria & Albert Museum, London (no. 1122-1882; op. cit., Vol.I, fig. 1.5.2.). Interestingly, a number of features on the Jones barometer, including the neo-classical character of the oval portrait medallion, the signature of a Louis XVI physicien Ciceri on the dial and the use of the constructional technique of attaching the mounts from behind, thereby concealing the screws have all prompted the suggestion that it may well date from the Louis XVI period, rather than the Louis XIV period.