Screws – The Early Years

The first in a series of four videos one screws, though other videos might get mixed in.

0:00 Introduction 0:54 Waterscrews 1:48 Fruit presses 4:08 Worm Drive 5:24 Internal thread cutting 7:19 Dioptra 7:50 Armor screws 8:17 Screws vs bolts 9:01 Armor part II 9:26 Early screw drivers 9:47 Medieval House book 13:01 Löffelholz Kodex 15:22 Ediphone 17:31 Conclusion

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