Several mobile disappearing mounts appeared in France and Germany circa 1893. These included both road-mobile and rail-mobile designs. In France, Schneider and St. Chamond produced road-mobile design and rail-mobile designs, in 120 mm (4.7 inch) and 155 mm weapons. The 0.6 meter rail "affût-truck" system was used tactically for 120mm and 155mm guns in WWI. Six 120 mm Modèle 1882 guns on St. Chamond mounts were deployed at Fort de Dailly in Switzerland from 1894 to 1939. Krupp produced a rail-mobile 120 mm disappearing gun in 1900.