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(Paperback)
By: Peter Wotton
ISBN: 9780747807339
Readership/Audience: General
Publication Date: May 2009
Publisher: Bloomsbury Publishing PLC
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The mechanical anniversary clock, also known as the 400-day clock or torsion pendulum clock, is one of the most popular clocks ever invented. Anniversary clocks are recognizable by the decorative balls beneath the dial that rotate one way and then the other.
