Fifteen Swiss Rh.B.413 GE 6/6 Krokodil locos were built in the early 1920s to run on the Rhatischen Bahn metre gauge system. Four are still running at Landquart Exhibition track. The model, exhibited at a Harrogate show, was scratch built by Phil Brean using drawings from the Rh B.

Two forced cooled motors drive jack shafts via gears to connecting rods fitted with roller bearings. Brakes are fully compensated with working pneumatic cylinders. Full suspension is fitted including jack shaft, body articulation is via spherical bearings.

Pantographs are motor driven for elevation. Many small parts are operational including doors; windows; inspection panels: bonnet panels; gear housing covers, and directional lights.