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
UK prototype model of a OO scale (1:76) British Rail Class 25 shown with an 18.0 millimetres (0.71 inches) diameter five pence coin
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.
Lima S.p.A. is an Italian brand and former manufacturing company of model railways. The company was headquartered in Vicenza for almost 50 years, from the early 1950s until the company ceased trading
A HO scale model of SBB CFF FFS electric locomotive made for the European markets.
A simplified HO scale model of SNCF diesel locomotive made for the European markets