A wall mounted barograph, Antoine Redier patent, late 19th century, in a hinged, angled glazed mahogany case with hook and eye fasteners opening to an exposed aneroid capsule and movement with altitude adjuster, the silvered scale plate divided for 28 to 31 inches or barometric pressure, inscribed No 143, PATENT 7323, above a recording drum, 26cm high, 15cm wide, 11cm deepProvenance: with City Fine Arts, London, October 1970, £20