Trains O Gauge

The earliest records show Marklin of Germany producing O gauge Railway models in the early 1900’s. A standard track spacing of 1 1/4″ inches attracted many other manufacturers to enter the market. It is derived from Gauge 0 (zero) which at the time was a narrower width than Gauge 1 (1 3/4″ track width) which was in common use at the time. Later the ‘zero’ was changed to be the letter ‘O’ and relative scales such as OO & HO were introduced. Gauge always references the spacing between the running rails of the track, while Scale is the relative measurement of the model size to its prototype.