Reference: 6619 A Negretti & Zambra Forecasting Aneroid Barometer with a 3" dial, in it's original carrying case. The dial signed Negretti & Zambra, London. No. 21008. The Case with monogram "G.B." Provenance: Orininally presented to Vice Admiral Sir Geoffrey Blake (the Battleship H.M.S. Hood).
Dimensions: Case: 4.1/4
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