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Instruments of Science & Technology / AN EDWARD TROUGHTON DOUBLE-FRAMED SEXTANT, ENGLISH, CIRCA 1820,

Lot 40
AN EDWARD TROUGHTON DOUBLE-FRAMED SEXTANT,
ENGLISH, CIRCA 1820,
28 September 2022, 14:00 BST
London, Knightsbridge

Sold for £765 inc. premium

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AN EDWARD TROUGHTON DOUBLE-FRAMED SEXTANT, ENGLISH, CIRCA 1820,

signed Troughton, London, with silver scale and vernier, magnifier, two sets of coloured filters, in fitted mahogany case with three alternative telescopes, together with a copy of Troughton's 1788 "Framing for Octants, Sextants, Etc" patent,
10in (25.5cm) radius
the case 12 1/2in x 5in x 12in (32cm x 13cm x 30.5cm)

Footnotes

Edward Troughton (1753-1835) was a leading maker of surveying and navigational instruments in England, and is recorded at 136 Fleet Street in London. He originally served as an apprentice for John Troughton at the family firm. Later in his career, Edward partnered with William Simms (1793-1860) to form Troughton & Simms, which continued to produce surveying and other scientific apparatus.

Additional information