Based on the scratches and wear we see on incoming knives, this seems to be the implement that is used most often, by most Swiss Army knife owners. It is a handy sharp edge that can easily cut vegetables, sandwiches, paper, wood, and even soft metals.
WARNING: The main blade on pocket-sized and standard-sized Victorinox Swiss Army knives is non-locking. If you push in the wrong direction, the blade will close into the body (possibly endangering fingers). Be careful when using it with a great deal of force!
Uses: The medium-sized main blade on Victorinox Swiss Army knives has the following lengths (depending on overall knive size: