OO Gauge and O Gauge Model Train Set Scales

November 2, 2005

Model train set gauges and scales can be confusing particularly when the names sound almost the same. OO gauge and O gauge fall into this category and can trip up beginner and even experience model raliroaders at times. So, here is the difference explained once and for all.

OO Gauge Model Trains

OO Gauge has for many years, been the most popular model train scale with British Railway Modelers. OO gauge has a ratio of 1:76 equaling a scale of 4mm to the foot. It is considered to be the standard for many model train set enthusiasts in the UK and is a popular model train scale with beginners buying Hornby or Bachmann model train sets.

OO Gauge Scale Model Trains Specifications: 4mm : 1ft 1/76th Scale Track Gauge: 16.5mm
Because OO gauge is so popular in the UK there is a wide range of OO gauge accessories available in the UK. There is also a good secondhand market for OO gauge in the UK which can considerably reduce the costs of the hobby.