THE COLLECTIONS OF JANET & JACK THORNTON
Wednesday, 12 - Monday, 24 November 2025
A tonometer, cased, by Weiss London (to measure the internal pressure of the eye); a cased Beck lacquered brass mono prism hand spectroscope, and an Otis King's patent Model K cylindrical slide rule, original box and instructions.
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This lot closes in 1 week 5 days 24 Nov 7:40 pm (NZST)
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