THE COLLECTIONS OF JANET & JACK THORNTON
Wednesday, 12 - Monday, 24 November 2025
A brass cased compensated pocket barometer-altimeter by Negretti & Zambra, London, No.18454, c.1875
Estimate $90 - $150
Realised: $100 plus premium
Lot Details
oxidised silvered dial engraved with 21-31" scale and 0-10,000 ft, bevel glazed in a revolving milled rim with a fine index pointer. Dia.50mm.
