Originally a skilled locksmith, Jens Olsen learned the trade of clock-making and, in the 1920s, designed an exceedingly intricate astronomical clock made of more than 14,000 parts. Today displayed in Copenhagen City Hall, the clock shows not only the time and date but also lunar and solar eclipses and the positions of stars and planets. The complex clock took over a decade to assemble, and Olsen died before his masterpiece was finally set in motion by King Frederick IX. Who helped him start it? Discuss
Source: The Free Dictionary