A bargain? I have no idea, but it's certainly uncommon.
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https://www.facebook.com/marketplac...1895758320610836480","ftmd_400706":"111112l"}
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Can be good fun. Some screws, the ones that hold the date ring on most wristwatches spring to mind, are about the size of a grain of sand. Put them under the microscope and you are looking at a perfect csk head machine screw. Definitely need a clean bench and a tray, drop one of those on the floor and it's gone!I watch a number of watch tinkerers on YT and one of them made a 0.2mm diameter screw the other day, crazy stuff they get up to. Their tools must be capable of some accurate work!
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