The Adler (German for "Eagle") was the first locomotive that was successfully used commercially for the rail transport of passengers and goods in Germany. The railway vehicle was designed and built in 1835 by the British railway pioneers George and Robert Stephenson in the English city of Newcastle. It was delivered to the Bavarian Ludwig Railway (Bayerische Ludwigsbahn) for service between Nuremberg and Fürth. It ran officially for the first time there on 7 December 1835. The Adler was a steam locomotive of the Patentee type with a wheel arrangement of 2-2-2 (Whyte notation) or 1A1 (UIC classification). The Adler was equipped with a tender of type 2 T 2. It had a sister locomotive, the Pfeil. History Earlier locomotives in Germany The Adler is often cited as the very first locomotive used by a railway company on German soil, but as early as 1816 a serviceable steam locomotive was designed by the Royal Prussian Steelworks (Königlich Preußische Eisengießerei) in Berlin. During a trial run this so-called Krigar locomotive hauled one railway wagon with a payload of 8,000 German pounds (about ). But this vehicle was never used commercially. Nevertheless, the Adler was undoubtedly the first successfully operated locomotive in regular use in Germany. Origin During the construction of the Bavarian Ludwig Railway, founded by Georg Zacharias Platner, the search for a suitable locomotive started in England. The first letter of enquiry was sent via the London company, Suse und Libeth, to Robert Stephenson & Co. and Braithwaite & Ericsson. The locomotive was to be able to pull a weight of ten metric tons and cover the distance between Nuremberg and Fürth in a time of eight to ten minutes. Carriages were heated with charcoal. Stephenson replied that a locomotive of the same build class as those on the Liverpool and Manchester Railway, with four wheels and a weight of between 7.5 and 8 metric tons, could be supplied. A lighter engine would not have the necessary power of adhesion and would be more expensive than a heavier engine. In any case, on 16 June 1833, Johannes Scharrer asked for a quote for two locomotives with a weight of 6.5 metric tons and the necessary package of accessories. Stephenson quoted a cost of about £1,800. The German company, Holmes and Rolandson from Unterkochen near Aalen, offered a steam locomotive with a power of between two and six horsepower at a