OO9
OO9 is a composite scale OO indicates that it is to 4mm=1ft The 9 refers to the track gauge of 9mm This is essentally used for modelling narrow gauge prototypes like Talyllyn, Ffestiniog, Welsh Highland & Lynton & Barnstaple to name a few
The Layout featured here is a small compact layout based on the Glyn Valley Tramway
it is video just click on the White triangel in the black cicle
The Glyn Valley Tramway
was a narrow-gauge railway that ran through the Ceiriog Valley in north-east Wales, connecting Chirk with Glyn Ceiriog in Denbighshire (now Wrexham County Borough). The gauge of the line was 2 feet 4+1⁄4 inches (718 mm) while it was horse-drawn,[1] which was unofficially increased to 2 ft 4+1⁄2 in (724 mm) when steam locomotives were introduced.[2] The total length of the line was 8+1⁄4 miles (13.3 km), 6+1⁄2 miles (10.5 km) of which were worked by passenger trains, the remainder serving a large granite quarry and several minor slate quarries.