Trammel of Archimedes. By Guy Marsden. 15:18 video:
https://www.youtube.com/watch?v=OZcTdorj0mk
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Trammel of Archimedes. By Guy Marsden. 15:18 video:
https://www.youtube.com/watch?v=OZcTdorj0mk
Somewhere in Dad's collection is a simpler device, (2 slots @ 90°) from a weaving machine, very worn but works smoothly, all wood probably ash, with brass pins.
Well over 100 years old, I don't recall any markings, could be work of an old factory maintenance man.
Oddly enough, every souvenir stand has a nearly identical device as a vintage toy.