Around 1970, some of the push-along 000 range was re-introduced in N gauge, with a track gauge that was marginally larger. N gauge is scaled at 1∶152, which results in a track gauge of 9.42 mm between the rails, as opposed to the smaller 9mm for 000.
The N gauge track was molded plastic instead of metal, still connecting via lugs. The curves were wider radius than the 000, a short fall of the 000 version curved track.
There was a smaller range of rolling stock, using the same 000 mold castings but finished in different colour schemes to the 000 stock. They also had hook and eye couplings, used in most model railway coupling solutions.
The locomotives reused were the Small Tank Loco, a US Baldwin steam locomotive and an American Transcontinental Diesel. The latter casting was also used for a B.R Diesel Engine in this range, with a BR logo and number.
The two UK locomotives were both finished in a light green livery. The American Transcontinental Diesel in yellow, the Baldwin steam locomotive in black.
For the remainder of the rolling stock, there were other colour differences, along with some advancements, such as the the BR Main Line Coach having a Perspex window slotted inside and more stencilled detail on the outside.
