Whether you open up a church clock, pocket watch, mechanical watch, or quartz wristwatch, you’re bound to find an oscillator. Although this assembly can look and work differently depending on the timekeeping device it’s used in, its purpose is always the same: to set as precise and steady a pace as possible. In this article, we’re digging deep into the common oscillator types in the watch world, explaining how they work as well as their pros and cons.