How if it wasn't for the clock we would have to tell the time based on the sunset and sunrise like they did in the Stone age

John Harrison invented the Chronometer which was a kind of clock for ships. Was very important in its day due to how it helped ships navigate.

You could include , who made it , the year , who hs showed his invention to , where was it made , did he have any inspiration , life before and after the clock was made ?