Brussels sprout harvesting machine. Hard to believe there are so many different harvesting machines. I believe toolmaking is arguably humanity's oldest industry, because of the evidence we have of ad hoc toolmaking evolving into a basic industry, with assigned tasks and specialized workers for the primitive mass production of chipped rocks.
Maybe agriculture is a close second or third?
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Previously:
https://www.homemadetools.net/forum/...295#post126877
https://www.homemadetools.net/forum/...402#post127263
https://www.homemadetools.net/forum/...237#post109903
https://www.homemadetools.net/forum/...945#post124948
https://www.homemadetools.net/forum/...3352#post98829
https://www.homemadetools.net/forum/...472#post116998
https://www.homemadetools.net/forum/...207#post115935
https://www.homemadetools.net/forum/...699#post111306
https://www.homemadetools.net/forum/...0652#post72887
https://www.homemadetools.net/forum/...944#post109050
https://www.homemadetools.net/forum/...3374#post98883
https://www.homemadetools.net/forum/...9353#post89138
https://www.homemadetools.net/forum/...8193#post86969
https://www.homemadetools.net/forum/...7486#post85683
https://www.homemadetools.net/forum/...5007#post81012
https://www.homemadetools.net/forum/...4640#post80304