THE COLLECTIONS OF JANET & JACK THORNTON
Wednesday, 12 - Monday, 24 November 2025

Lot 0204 « Prev Lot View All Lots Next Lot »

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.

Realised: $40 plus premium
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. Image 1++