2. Photograph (composite) of all the last known remaining fragments of the Antikythera Mechanism. As part of the Antikythera Reasarch Project high resolution photographs were taken of all the Fragments. The pictures were taken by Costas Xenikakis and subsequently digitized by Tony Freeth.
3. 2D CT slices through Fragment A of the Antikythera Mechanism showing just some of the gears on two different levels, or planes through the geartrain. Fragment A contains 27 gears.
4. 2D CT Slice through Fragment B of the Antikythera Mechanism. This slice shows part of the upper back dial, the dial is in the form of a spiral, with 47 divisions per turn, displaying the 235 months of the 19 year Metonic cycle. Part of the smaller subsidary dial can be seen which displays the 76 year Callippic cycle. (There are 4 Metonic cycles within 1 Callippic cycle.)
5. 2D CT Slice through Fragment D of the Antikythera Mechanism.
6. 2D CT Slice through Fragment F of the Antikythera Mechanism. This slice shows part of the lower back dial . The dial is in the form of a spiral, with 223 divisions showing the Saros eclipse cycle. Part of the smaller subsidary dial can be seen which displays the 54 year Exeligmos cycle.
7. 2D CT Slice through Pointer-Follower found in the Metonic dial within Fragment B of the Antikythera Mechanism. The discovery of this device was key in determining the the back dials are spiral, not circular. This was subsequently supported by the discovery of the word "spiral" in the inscriptions.
8. Putting it all together, CT Slices and Geometry of the Antikythera Mechanism. A composite of fragments A, B, E and F. The Metonic calendar is at top, with its subsidiary Callippic dial. The Saros eclipse cycle is below, with its subsidiary Exeligmos dial.
9. Putting it all together, CT Slices and Radiographs of the Antikythera Mechanism. Another composite of fragments A, B, E and F.
