Bruce Sterling @brucesThe 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
YouTube
Joel Baxter@bruces an epic video series; hard to believe how much work and time he's put into it. The cherry on top was when he coauthored a paper on a new interpretation of part of the artifact: https://bhi.co.uk/by-the-light-of-the-moon-a-lunar-calendar-on-the-antikythera-mechanism/