Development
In the first half of the 17th century, George Graham developed the deadbeat escapement, which allowed for more accurate timekeeping than previous clocks. The regulator clock was developed by Benjamin Vulliamy and James Harrison, both Englishmen, and the clock became very popular in Vienna.
Features
To ensure accuracy, builders of regulator clocks eliminated unnecessary, complicated features, such as calendars on the clocks. Instead of the clock's hands moving from one mechanism, each hand was given a separate mechanism. Most of these clocks used the deadbeat escapement mechanism and also featured a free-swinging pendulum.
Collectible
Since the advent of the "digital age," there is no longer a need for regulator clocks as a way to keep accurate time. But, many people still collect these antique clocks, which can be incredibly ornate. Clocks given the name "regulator clock" are often sold new in department stores or online, but this usually refers to simply a clock with a pendulum. Some people also build their own regulator clocks.