3 ms·
Also true of the most basic components that we take for granted now, e.g. screws. The concept was known to the ancients, but they weren't mass produced as faste
by KineticLensman 7y ago
Also true of the most basic components that we take for granted now, e.g. screws. The concept was known to the ancients, but they weren't mass produced as fasteners until the 1760s [0]
[0] https://en.wikipedia.org/wiki/Screw https://en.wikipedia.org/wiki/Screw
- HeyLaughingBoy 7y agoI remember watching a documentary about a country in central Africa where, less than 15 years ago, blacksmiths were making screws and nuts by hand. They needed to be kept together or the manufacturing variations would mean that last week's screws might not fit this week's nuts. These guys were fast, but nowhere remotely as fast as thread-rolling machinery of course.