The Swiss Army knife

A Swiss Army Knife, often abbreviated "SAK" by knife aficionados, is a useful multifunction tool. It is a small knife with many other tools, possibly including a toothpick, scissors, serrated knife, tweezers, can opener, and screwdriver. These are folded into the handle of the knife and are unfolded for use. Many different types of Swiss army knives are available, but not all are genuine.

There are two Swiss Army knife manufacturers, Victorinox and Wenger; they supply about 50,000 knives to the Swiss army each year. The rest of production is devoted to exports, mostly to the United States. Victorinox and Wenger SAKs can be immediately distinguished by their logos; the Victorinox cross is surrounded by a shield with bilateral symmetry, while the Wenger cross is surrounded by a slightly rounded diamond with quadrilateral symmetry.