An English silver aneroid pocket barometer, the case by Albert Thomas Oliver, London, 1914, the dial calibrated in barometric inches divided into tenths, the outer altimeter scale calibrated for 0 to 10,000 feet divided for every hundred feet, inscribed Compensated, RAIN CHANGE FAIR, set behind slightly convex glass, with suspension loop, 5cm diameterProvenance: Christie's, London, 11 September 1986, lot 28(?)