12th May, 2022 12:00
Fine Scientific and Medical Instruments
Two Protractors by Edward Troughton
English, c.1800-1820, both signed 'Troughton London', one semicircular, divided to half a degree internally, with three different internal scales 1-8 along base, 19cm across, with a vernier protractor divided to half a degree, reading to one arc-minute by vernier, diameter 15.2cm (2)
Sold for £275
Result plus buyers premium
English, c.1800-1820, both signed 'Troughton London', one semicircular, divided to half a degree internally, with three different internal scales 1-8 along base, 19cm across, with a vernier protractor divided to half a degree, reading to one arc-minute by vernier, diameter 15.2cm (2)
Auction: Fine Scientific and Medical Instruments, 12th May, 2022
