History of the bicycle fashion of the day made the "ordinary" bicycle inaccessible. Queen Victoria owned Starley's "Royal Salvo" tricycle, though there is no evidence she actually rode it. Although French and English inventors modified the velocipede into the high-wheel bicycle, the French were still recovering from the Franco-Prussian war, so English entrepreneurs put the high-wheeler on the English market, and the machine became very popular there, Coventry, Oxford, Birmingham and Manchester being the centers of the English bicycle industry (and of the arms or sewing machine industries, which had the necessary metalworking and engineering skills for bicycle manufacturing, as in Paris and St.
Cipher Department of the High Command of the Wehrmacht to find their perceived weaknesses, they never constructed any themselves. The chief German cryptological machine was the Enigma machine. It was invented by the German engineer Arthur Scherbius at the end of World War I, was regarded as antiquated and was considered secure only when used properly, which was generally not the case later in the war. Director Fenner was instrumental in getting them introduced into use. One item alone, the variable-notch rotor () would have made the Enigma secure after 1942. The Siemens and Halske T52-E (German:Geheimschreiber) i.e. the G-Schreiber was considered a secure teleprinter. It was considered modern