If you want to study the Antikythera Mechanism, this is where to start. It is helpful if you have a background in mechanics and in astronomy. The work is 70 pages, and should be read methodically. There are a few irregularities here and there, but they do not detract from the total work. You will then appreciate this exceptional and perceptive work. To get you started: General background: pgs. 51-62 (esp. 56-60); Description of the device: pg. 13, col II; Photos: mostly pgs. 23-26; Drawing of case: pg. 17; Gearing diagrams: flat: pgs. 37-40; side: pg. 43. This side drawing by Beverly Pope is the "holy grail," normally seen in descriptions. To further you on your quest, join the gears with the question marks beside them...