The layout is to a scale of 1:43 (7mm to one foot - the same as '0' gauge) but runs on Peco 16.5mm narrow gauge track (the same gauge as '00'). The area modelled depicts the narrow gauge terminus, the goods exchange shed with the standard gauge, and part of the harbour. The narrow gauge line disappears into the hidden sidings behind the loco shed and workshops at Crompton Lodge.

The track on the model is Peco 0-16.5, and the locos and rolling stock are a mixture of kit and scratch built items together with some adapted from '00' gauge products. The motive power ranges from a vertical boilered De Winton quarry loco to more modern diesel shunters. The back scene is hand painted in acrylic paints and most of the buildings are scratch built from foam board and Plasticard. Details to be seen include a fisherman, an artist painting the boats in the harbour, the telephone engineer repairing recent storm damage to the overhead lines, the seagulls around the fishing catch, a workman cutting up a scrap loco with an oxyacetylene torch, and the blacksmith working at his forge.

The layout was originally designed for exhibition use, and the plywood baseboards split in two and the legs fold up for transport. Aberrog appeared at several local shows in the late 1990s and early 2000s. It also appeared at the Model Engineering Exhibition at Alexandra Palace in 1999. The layout has now been retired from the exhibition circuit, but is still used at home.