Trix and Robert Haussmann are an architect and designer duo based in Zürich, Switzerland. Since founding their General Design Institute in 1967, they have had numerous solo exhibitions, including shows at Museum für Gestaltung, Zürich, and Kunsthaus Bregenz, Austria. On 13 July, their retrospective, ‘The Log-O-Rithmic Slide Rule’, tours from KW Institute for Contemporary Art, Berlin, Germany, to Nottingham Contemporary, UK, where it will be on view until 7 October.