US Edition 
World's smallest working model train set unveiled
The world's smallest working model train set has been unveiled – measuring just 1/8th of an inch by 1/4 of an inch.
At 1-35200 scale to the real thing, the five-carriage train travels around an oval route including ride through a tunnel.
Created by New Jersey model train enthusiast David Smith, the model was built using nothing more fancy than a craft knife and a steady hand.
Mr Smith, 55, from Toms River, said: "This model train set is going to be part of the larger train set I have at home.
"I am creating a fictitious village called James River Branch and this model train is going to be placed inside the model shop I am building as part of the re-creation.
"It is going to be a model train village inside a model, so it is very postmodern"
Powered by a standard two-inch-long rotating motor head and carved out of mouldable plastic, the model train cost Mr Smith just over £6 to make.
"To get a sense of scale you have to remember that the River Branch project is being built to the scale of 1-220," Mr Smith added.
"It has taken up two and a half years of my life and is going to be very impressive once it is finished."