4 mm scale
Videos
4 mm scale is the most popular model railway scale used in the United Kingdom. The term refers to the use of 4 millimeters on the model equating to a distance of 1 foot on the prototype. It is also us
4 mm scale model of a British Rail Class 25 shown with a 18mm coin for size.
Gryndene Halt, a station on Evaleight Light Railway, by the Sussex Downs 009 group
OO gauge
Videos
OO gauge or OO scale is the most popular standard gauge model railway standard in the United Kingdom, outside of which it is virtually unknown. OO gauge is one of several 4 mm-scale standards, and the
4 mm scale
…Three different gauges are used for modelling standard gauge railways in the United Kingdom. OO gauge uses 4 mm scale with 16.5 mm gauge track, which is inaccurately narrow since it is correct for HO scale (1:87.1). It is the most popular standard in…
Hornby Railways Flying Scotsman locomotive on an OO gauge layout
Class 800 Euston Road 00 gauge model Railway at the NEC
OO scale (left) and HO scale (right) models of the EMD Class 66, showing the size difference.