7003

One of the most fascinating timepieces ever devised, the Rolling Ball Clock was patented by Sir William Congreve in 1808 (we include a copy of the original specification with each clock).

The basic concept is that the ball takes 15 seconds to run down the zig-zag track where it trips the escapement which reserves the angle of the tray and causes the clock hands to move forward correspondingly.

The clock is wound once a week. Base: mahogany, but as an optional extra a green marble base is available. An optional mahogany framed glass case is available.