Compensation Procedures were at first relegated to substantial-finish watchmaking, but in excess of the a long time many of such once unique technologies have trickled down into inexpensive actions and into the realm of mass-generation, which means that nowadays’s simple actions perform a lot better than ever. Pierre Jaquet-Droz (1721-1790), https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/