Use

The metal device featured a plate that sat below the victims' jaw, which was connected by a frame to the head cap. The cap could be screwed down at the whim of the torturer.

Results

The victims' head would slowly be crushed killing the victim, but not before the victims jaw had been crushed, and their eyes had popped from their sockets.

In popular culture

Megadeth

Megadeth

Megadeth is an American heavy metal band from Los Angeles, California which was formed in 1983 by guitarist/vocalist Dave Mustaine, bassist Dave Ellefson and guitarist Greg Handevidt, following Mustaine's expulsion from Metallica. The band has since released 13 studio albums, three live albums, two...

's song "Head Crusher" (from the album Endgame) is about the device.