barrel
The Mainspring and Barrel: How a Mechanical Watch Stores a Day of Energy
Wind the crown of a mechanical watch and you are doing something quietly remarkable: storing the energy that will animate hundreds of tiny components for the next day or two. No battery. No outle...
The Power Reserve Indicator: A Window Into the Mainspring
Most watch complications tell you something about the world — the date, the moon, the time in another city. The power reserve indicator is different. It tells you something about the watch itsel...
