Stiletto for ranging distance. The stiletto was later adopted throughout Italy as the favored offensive thrusting knife ("arma manesca") of the medieval assassin,<ref name="ATK"/ so much so that it was invariably prohibited as a treacherous weapon ("arma insidiosa") by the authorities of the day. The stiletto was preferred by assassins as it was silent, easily concealed inside a sleeve or jacket, and featured a blade capable of easily penetrating the heavy leather and fabric clothing of the day, while inflicting mortal wounds that tended to bleed less than those made by other types of knives. In Italy, the stiletto began to
Stiletto fallen or severely wounded heavily armored opponent. The needle-like blade could, if used with sufficient force, penetrate most mail or find its way through gaps in a knight's plate armor, and was narrow enough to pass through the eye slits of the helmeted knight. A severely wounded opponent who was not expected to survive would be given a "mercy strike" (French "coup de grâce"), hence the name "miséricorde". Later, the Gunner's Stiletto became a tool for clearing cannon-fuse touch holes; used in the manner of an automotive oil dipstick, they were often inscribed with marks indicating levels of powder charges