The Clickspring guy points out that there are no "absolute measurements" in his work. For years now, he's been hand-building an ancient Greek Antikythera Mechanism just to eyeballing it

https://youtu.be/xwmxmUNA7Pw?si=NHFPAaes90hy4ea9

The Antikythera Mechanism Episode 12, Part 2 - Making The Lunar Phase Display "Pipe" and "Cheeks"

YouTube
@bruces I mean inasmuch as the device is basically a geometric proof made out of brass, that makes sense. You only need relative measurements for that thing. It'll work the same way no matter the scale factor.