The world's smallest working model train set. It measures just 1/8th of an inch by 1/4 of an inch. Having a scale of 1 - 35,200 to a real train, the five-carriage model train manages to travel around an oval route. The model even includes a tunnel through which the train goes through and a clear sky as its background.
Read how it was built.
(thanks Cora)
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