Lol!
Pretty much proof right there that humanity was pretty advanced at some point and some idiot set us all back about 2000 years by taking out key people (& library of Alexandria?). To construct something that intricate, even “by hand”, would require some precision metalworking & removal equipment not to mention a great deal of mathematics.
Reminded me somewhat of the “Torpedo Data Computers” of WWII that US submarines used. But look how much went into something that just had to compute a firing angle.
https://maritime.org/tech/tdc.htm