Antikythera Fragment #9 - Ancient Tool Technology - The Scorper And Trammel, by Clickspring.

In this video I put forward a proposal for how the spirals on the rear dial of the mechanism may have been formed.

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Related Videos:

Antikythera Fragment #3 - Ancient Tool Technology - Hand Cut Precision Files -    • Antikythera Fragment #3 - Ancient Too...  
Antikythera Fragment #4 - Ancient Tool Technology - The First Hardened Steel -    • Antikythera Fragment #4 - Ancient Too...  
Antikythera Fragment #5 - The First Precision Drill Bit -    • Antikythera Fragment #5 - Ancient Too...  

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Metal Working in the Ancient World (Herbert Maryon) - https://www.jstor.org/stable/500498
Tools and Tool Marks. Gold and Bronze metallurgy in Western Europe During the Bronze and Early Iron Ages (Armbruster et al) - https://bit.ly/2GlBDtB
Scriber, Graver, Scorper, Tracer: notes on Experiments in Bronzeworking Technique (Lowery et al) - https://bit.ly/2MOIQDI
“The scholar, the mechanic and the Antikythera Mechanism”, M. T. Wright, Bulletin of the Scientific Instrument Society, lxxx (2003), 4–11.
“Calendars with Olympiad display and eclipse prediction on the Antikythera Mechanism” (Freeth et al), Nature, cdliv (2008), 614–17.
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Antikythera Fragment #9 - The Scorper And Trammel, by Clickspring.