Kyriakos Efstathiou 1, *, Marianna Efstathiou 2, Alexandros Basiakoulis 2 and Neofytos Kokkinos 1

1 EU ERA Chair on Digital Cultural Heritage, Digital Heritage Research Laboratory (Cultural Informatics), Department of Electrical Engineering and Computer Engineering and Informatics, Cyprus University of Technology, Limassol 3036, Cyprus;;

2 Laboratory for Machine Tools and Manufacturing Engineering, Mechanical Engineering Department, Aristotle University of Thessaloniki, 54641 Thessaloniki, Greece; (M.E.); (A.B.)

Heritage 2021, 4(4), 3848-3878; – 21 Oct 2021


The Antikythera Mechanism is the oldest extant complex geared device, an amazing analogue computer. It was built approximately 2,150 years ago. The device was operated manually by a user, setting a date in a dial. All necessary calculations were made using a set of gears (at least 39), while the results were displayed on several scientific scales. The Mechanism was used to calculate astronomical phenomena, such as solar and lunar eclipses. After an extensive description of the Mechanism, the main objective of the following paragraphs is to demonstrate the accuracy of its predictions.

Accurate and functional model of the Antikythera Mechanism  in scale 1:1 (Copyright © 2021 K. Efstathiou)