The gouge #9 has a small V-shaped profile for carving triangular cuts.

The gouge is an engraving tool used in linocutting.

Linocutting is a type of engraving where you cut a support called linoleum with a tool called a gouge.

Then, you will ink this support (the ink is only deposited on the parts not removed in relief), and press a paper to reproduce the pattern of this support.