The Nonus does not have an escapement but rather uses a count wheel to trigger a drop weight which impulses the pendulum once every 60 seconds. Here you can see a video of the Nonus in action :- https://www.youtube.com/watch?v=TQXNYJnWBJo The only thing missing is the 4 kg drive weight, a weight shell can be ordered as an extra (LARGE). With a minimum of tools, some wood glue, paint and patience you can turn this kit into a ticking centrepiece and elegant time keeper.
