jan 25, 1736 - John Harrison
Description:
In 1736, after years of work, Harrison invented a clock that used a spring instead of a pendulum. It was the first marine chronometer, an instrument that could give accurate time on a rolling ship.(https://divediscover.whoi.edu/history-of-oceanography/the-age-of-discovery/)
Added to timeline:
Date:
jan 25, 1736
Now
~ 289 years ago