John Hadley ( 1682 - 1744 )

Birth: Hertfordshire, England (16 April 1682) Death: 14 February 1744 Burial: East Barnet churchyard, Hertfordshire Profession: Scientific instrument maker Education: Lincoln's Inn (admitted 1699) Career: Improved the reflecting telescope and invented the reflecting quadrant; worked with Francis Hauksbee, Clerk to the Royal Society, in improving telescopes Membership: Fellow Election Date: 21/03/1717 Council: 1720, 1722, 1724, 1726-1730; VP 1728- , 1734- , 1741-.