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Steampunk GPS

posted by Jason Kottke   May 04, 2009

Christopher Fahey on the watchclock, a device built to keep track of the movements of night watchmen.

The mechanism itself has barely changed for a century: although some more recent models incorporate GPS and other technologies, the mechanical key-based watchclock system is still in wide usage, with many buildings still employing the same keys and the same clockwork devices they’ve used since the 1940s. It’s a genuine example of an “if it aint broke, don’t fix it” kind of technology.

(via df)

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