Edward Troughton ( 1753 - 1835 )

Birth: In the parish of Corney, Cumberland, England (October 1753) Death: London (12 June 1835) Burial: Kensal Green cemetery, London Profession: Scientific instrument maker Research Field: Mathematics, optics, physics Career: Apprenticed to his elder brother, John, a mechanician in London, and later was his partner; after John's death, Edward took into partnership William Simms (FRS 1852); invented a new method of graduating arcs of circles (1778); was colour blind First English maker of mathematics instruments to apply spider silk in surveying and astronomical instruments, though other English makers followed his lead.