Around 1500, in France, Italy and Germany, the weights needed to run clocks were replaced by springs. The invention was attributed to Peter Henlein, a German locksmith. He was the one who started making smaller watches, which, in addition to the practical component, also had another component that had not been encountered before, that of design.
The spring clock had only the arm that indicated the time and lacked the glass protection on top. The minute hand was invented in 1577 by Jost Bürgi. His invention was part of a clock made for Tycho Brahe, an astronomer who needed an accurate clock to look at the stars.