Greetings, fellow dialists, I first read about the Antikythera Mechanism in Time in Antiquity, a book by Robert Hannah which was reviewed in the Bulletin of the British Sundial Society Vol. 21, 2009. I now repeat Frank King's earlier signal that a very good and up-to-date account of this instrument appears in Scientific American for December. Frank got hold of a copy of this issue long before it appeared on the stands of the newsagent, W. H. Smith in the UK, where it arrived only a few days ago. This amazing instrument, brought up from the sea bed in 1900 has epicyclic gearing, a device 1500 years ahead of its time. There are gear trains for the current date, for the Metonic cycle, for the Saros cycle and for the moon's motion. Want to know the date of the next solar eclipse? Just turn the crank. Frank 55N 1W
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