The inside of a clock

A picture of the inside of a clock, showing alll the cigs and wheels. Download this high resolution wallpaper from
1 vote
It’s amazing to see how they came to build these machines. All the cogs are working together just to tell us what time it is. How would you calibrate a clock back in the day? You would need to have another clock that runs precisely and you would need a lot of patience to see it runs correctly.
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