XJF115855 Sir Marc Isambard Brunel (1769-1849) 1812-13 (oil on canvas) (b&w photo) by Northcote, James (1746-1831); 125.1x99.1 cm; National Portrait Gallery, London, UK; (add.info.: invented method of making ship\'s blocks and installed machinery at Portsmouth dockyard; invented knitting machine and timber bending machine; made tunnelling shield and with it built the Thames Tunnel;); English, out of copyright.