According to one of the posts[0] on the photographer's website: > The metal device visible in the left picture was part of a spinning chair. It held the head i

According to one of the posts[0] on the photographer's website: > The metal device visible in the left picture was part of a spinning chair. It held the head in the correct position during the photographing. [0] http://www.marinamaral.com/blog/2018/4/9/faces-of-auschwitz-salomon-honig http://www.marinamaral.com/blog/2018/4/9/faces-of-auschwitz-...