Rusty - Narrow Gauge (HOn30 Scale) Brand new in box.US Import. £95.00 Out of stock. Narrow Gauge Thomas & Friends™ products are HO models that run on N scale track. Running from the main line at Crovan's Gate to the Blue Mountain slate quarry, the Narrow Gauge Skarloey Railway provides important transport for Sodor Mining. Die-cast construction. Performs best on 11.25" radius curves or greater.