A modern nixie tube clock of great ambition, regrettably IoTed

boing
52

for $30k, it can have its own rubidium frequency source, so it would never need setting. Good to a millisecond per year. My Atomic Nixie Clock has one that I got on ebay for $300. They cost less now.
http://www.nixiebunny.com/rbnix/rbnix.html

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