Models View all A 1 cylinder horizontal non reversing mill steam engine 5 20 1 1867 Otto Langen Atmospheric Engine 7 15 0 experimental steam- otto langen 7 26 3 Trevithick Dredger 12 19 0 LONDON STEAM CARRIAGE OF 1802/1803 12 36 2 Stephenson's 1829 Rocket 9 26 3