Michael T. Wright, FSA (Born: 16 June, 1948) is a former curator of mechanical engineering at the Science Museum and later at Imperial College in London, England.

[6][7] Wright also increased upon Price's gear count of 27 to 31[5] including 1 in Fragment C that was eventually identified as part of a Moon phase display.

[10] This more accurate information allowed Wright to confirm Price's perceptive suggestion that the upper back dial displays the Metonic cycle with 235 lunar months divisions over a five-turn scale.

[11] Finally, as an outcome of his research,[2][11][13][14][15][16][17] Wright also conclusively demonstrated that Price's suggestion of the existence of a differential gearing arrangement was incorrect.

Their reading of the inscriptions on this dial reveals that the function displayed on it was the eclipse cycle of 223 synodic months, distributed around the four-turn spiral scale.

The Group offers a modification of my gear train which achieves this function and also incorporates exactly those mechanical features that I characterised as having probably been made redundant by alteration of the instrument.

The satisfactory way in which the Group’s suggestions for these parts fall in with my own observations of the artefact itself, and remove residual difficulties with my reconstruction, lead me to believe that they are correct.

I have no hesitation either in adopting the Group’s revisions of the function of the lower back dial and of the internal mechanism or in withdrawing statements concerning these features that conflict with them.