Sat 22nd November 2008
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The Congreve Rolling Ball Clock by Comitti
The Congreve Rolling Ball Clock is a favourite of clock collectors and was created by the English scientist Sir William Congreve and patented in 1808, he presented the original to the Prince of Wales (it can now be seen in the Royal Artillery Museum, Woolwich).
The concept of the clock reflects the aspiration of clockmakers to find an alternative to the pendulum as the escapement regulator. Regulation is achieved by the traverse of a ball along the zig zag grooves on an inclined plane. The ball trips the escapement at the end of each traverse reversing the slope of the platform. The principle of the clock is such that the accuracy of the timekeeping is limited to +/-3 minutes per day. This is not a reflection of the quality of manufacture but the fact that the temperature changes, dust on the track and even static electricity give rise to variations. The eight day movement is fusee-driven, gold plated and protected by a glass cover. The dials are silver plated and show the hours, minutes and seconds separately.
Availability is limited to 25 pieces worldwide annually - if you would like to confirm current availability please contact us
List Price £5,575 - Save £576 - (10% Off)
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| Details |
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| Product Information |
| Maker: |
Comitti S203G
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| Height: (approx) |
35.50cm (14in)
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| Width: (approx) |
29.20cm (11.1/2in)
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| Depth: (approx) |
27.30cm (10.3/4in)
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| Usually dispatches within: |
0 Days
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Jewellery