Hornby R7394 GWR Dunster Engine Shed OO Gauge Rainbow Railways Hornby R7392 GWR Dunster Goods Shed OO Gauge Rainbow Railways R7394 GWR Dunster Engine Shed R7391 GWR Dunster Station Hornby R7394 Skaledale GWR Dunster Engine Shed OO Gauge Hornby. The engine shed is an essential part of railway operations both in the modern era and in times of yore. Engine shed would be the places that engines would be steamed up in the mornings, and worked on should a fault develop with an engine. Every railway needed them and this is no different in 00 gauge. Length 25cm, Width 10cm, Height 15cm 1: 76 Scale 00 Gauge Painted Finish Number of Parts: 1