細節
A double-cylinder air pump,
signed Pixu, Neveu et Succsr. de Dumoliez, Rue du Jardinet, à Paris, in lacquered brass with lignum vitae handgrips to the double-ended crank, pressure gauge (lacking glass tube) and glass bell-jar, on three (of four) brass feet, early 19th century
signed Pixu, Neveu et Succsr. de Dumoliez, Rue du Jardinet, à Paris, in lacquered brass with lignum vitae handgrips to the double-ended crank, pressure gauge (lacking glass tube) and glass bell-jar, on three (of four) brass feet, early 19th century