A hand axe (or handaxe or Acheulean hand axe) is a prehistoric stone tool with two faces that is the longest-used tool in human history. It is made from stone, usually flint or chert that has been "reduced" and shaped from a larger piec… See more

The four classes of hand axe are:
1. Large, thick hand axes reduced from cores or thick flakes, referred to as blanks
2. Thinned blanks. While form remains rough and uncertain, an effort has been made to reduce the … See more