THE COLLECTIONS OF JANET & JACK THORNTON
Wednesday, 12 - Monday, 24 November 2025
Two 19thC open face pocket barometer-altimeters, one brass the other silver plated,
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Lot Details
brass: convex glazed, silvered dial signed 'Cahill, Optician, Dublin', 23-31", rotating bezel (stiff) 0-10,000ft. Silver plated: bevel glazed silvered dial 19-30½" and 0 to 12,000 ft, milled rotating bezel with small indicator pointer.
