The World's Smallest Working Train Set

Meera Dolasia
Mon, 26 Oct 2009 05:26:00 -0700

A train enthusiast from New Jersey recently unveiled what is thought to be the world's smallest working train set. Measuring 1/8 of an inch by 1/4 of an inch, (tinier than a fingernail), the engineering feat is the work of David Smith, who crafted it using just a knife, some plastic and a lot of imagination.