Very common in all the world, the Garrotte received its Spanish name due to its popularity in the area. The Spanish also perfected this instrument to cause a painful and decisive death.
The victim was tied to the instrument and his or her neck forced inside the iron collar. With the handle that can be seen in the picture, the executioner slowly crushed the victim's neck causing death from asphyxia.
The garrote was widely used during the Spanish Inquisition in order to kill heretics who confessed to their crime. If he didn't confess, he was burned at the stake alive instead. The reason is that being killed by the garrote takes a few minutes at most, while being burned alive takes much longer.
This device was used in Spain until 1975, when a student was executed. He was later found innocent.