Rotation Speed (Aviation Blog)

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Weird and Wonderful Gadgets That Never Quite Took Off

It was the invention of the future - a tiny machine complete with its own map that would tell motorists which way to go. But this was no GPS, it was a wristwatch-style device equipped with minuscule maps. It is one of the labour and face-saving devices to go on display from a private collection of weird and wonderful gadgets from the past. Some interesting stuff here.

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