Screw You!

There is an interesting video on early screw (thread) devices on Youtube. There is a brief mention about handcuffs along with an illustration reprint from a German book:  (timestamps)

 

 ...and a mentioning of thumbscrews: 

 
 


All the best,
  --Vince

History of screws

Iain McCool posted that last June. You must have been in lockdown. Ha Ha

Ghost wrote: ↑

May 12, 2022

History of screws

Iain McCool posted that last June. You must have been in lockdown. Ha Ha

You meant Ian McColl?