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(mechanical) watch making
I really like this idea, but I wouldn't know where to start! Are there good kits/planning resources?
This looks about the right complexity for a class: http://www.projectclock.org . Depending on time you could get some pieces pre-cut for the kids. Fun followup project: calibration.
So many connections to make here - timekeeping as the enabler of longitudinal navigation in the 18th century, craftsmanship, materials, artistry, jewelry, modern production techniques up to 3D printing, competitve advantage of trade (Swiss watch cluster)... etc.
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