Nice bit of draughtsmanship pre Cad Cam. Sulzer SD72 drive for indicating device for "Sugar Producer" by Hall Russell in 1957.
The first form of Cad Cam appeared in 1957 as PRONTO but it was later before it became commercially available, so we might well say "Look at that, a drawing by a human that's every bit as good as modern machines can do." Not as quickly and not as manipulative admittedly but quality, accuracy, skill and patience nevertheless.