A silver cased aneroid pocket barometer with altimeter
A silver cased aneroid pocket barometer with altimeter scale and thermometer Mappin, London, 1931 The 2 inch circular silvered register with curved mercury tube Fahrenheit scale thermometer to the recessed centre signed MAPPIN and inscribed Compensated within concentric scale calibrated for barometric inches divided into twentieths and annotated with basic weather observations within rotating outer scale calibrated in feet from 0 to 10,000 and divided for 50 foot intervals, the cylindrical outer case with hinged lid and engine-turned decoration throughout, marks for London 1931, diameter 6.4cm (2.5ins). Provenance: Private collection, Hampshire (ref. B17).
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A silver cased aneroid pocket barometer with altimeter scale and thermometer Mappin, London, 1931 The 2 inch circular silvered register with curved mercury tube Fahrenheit scale thermometer to the recessed centre signed MAPPIN and inscribed Compensated within concentric scale calibrated for barometric inches divided into twentieths and annotated with basic weather observations within rotating outer scale calibrated in feet from 0 to 10,000 and divided for 50 foot intervals, the cylindrical outer case with hinged lid and engine-turned decoration throughout, marks for London 1931, diameter 6.4cm (2.5ins). Provenance: Private collection, Hampshire (ref. B17).
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