The Antikythera calculating mechanism

Dimensions: 17 × 34 × 8 cm
Weight: 2 kg

The first computational machine in history. It was built around 120 B.C. and was used to predict astronomical and calendar events, as well as to determine important occurrences such as the Olympic Games.

It included at least 35 gears, dials, and discs, and operated manually. It accurately modeled complex cycles such as those of Meton, Callippus, Saros, and the Olympiad.

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With the purchase of the Antikythera Mechanism, receive the book “Ancient Greek Technology – The Inventions of the Ancient Greeks”