29th Nov, 2023 12:00
Fine Instruments of Science & Medicine
Negretti & Zambra O.S. Pocket Barometer
English, c.1860, the silvered dial engraved 'Negretti & Zambra, LONDON, 740' the case with beveled glass window with turning bezel with single register pointer, the scale engraved in barametric inches, the reverse is engraved O.S. with the military arrow followed by a complex mathematical formula and 'No.1' diameter 5cm
Footnote: the vendor has contacted the O.S. and they have no example of this engraved barometer in their collections.
Sold for £200
Result plus buyers premium
English, c.1860, the silvered dial engraved 'Negretti & Zambra, LONDON, 740' the case with beveled glass window with turning bezel with single register pointer, the scale engraved in barametric inches, the reverse is engraved O.S. with the military arrow followed by a complex mathematical formula and 'No.1' diameter 5cm
Footnote: the vendor has contacted the O.S. and they have no example of this engraved barometer in their collections.
Auction: Fine Instruments of Science & Medicine, 29th Nov, 2023
