From 1975 to 1981 Airfix also manufactured a line of ready-to-run models of British railway stock in OO gauge ( scale). Their details and accuracy were an improvement on rival products from other British manufacturers such as Hornby. The product range expanded rapidly. A model of a Great Western Railway (GWR) 0-4-2 autotank steam locomotive and GWR auto coach are amongst some of the many memorable and important product releases. Airfix also offered an analogue electronics-based multiple train control system (MTC) allowing independent control of locomotives on the same track. Airfix produced a large number of plastic kits for both railway stock and scenic items. Some of these such as the footbridge and engine shed became instantly recognisable to almost every railway modeller in the UK.