A gouge-shaped cutting blade or triangular awl/reamer (but not a gimlet) for making holes in leather and other...
A dagger blade in a “T”-shaped handle; when held the tang usually protrudes between the second and third...
The traditional general-purpose outdoor knife of Finland....
A radially symetrical knife with blades on four sides. Typically made as quill knives, most quadrangular knives also...