Rondel dagger

A rondel dagger /ˈrɒndəl/ or roundel dagger was a type of stiff-bladed dagger in Europe in the late Middle Ages (from the 14th century onwards), used by a variety of people from merchants to knights. It was worn at the waist and might be used as a utility tool, or worn into battle or a jousting tournament as a side arm.

The blade was made of steel, and was typically long and slim with a tapering needle point, measuring 12 inches (30 cm) or more; the whole dagger might be as long as 20 inches (50 cm). Rondel means round or circular; the dagger gets its name from its round (or similarly shaped, e.g. octagonal) hand guard and round or spherical pommel (knob on the end of the grip).

The blade's tang extended through the handle, which was cylindrical, normally carved from wood or bone. In cross section, the blade was usually diamond-shaped, lenticular, or triangular. These blades would have a sharpened point, and either one or both edges would also be sharpened. They were principally designed for use with a stabbing action, either underarm, or over arm with a reverse grip (reminiscent of an ice pick). The long straight blade would not have lent itself to a slashing or sabre action. Rondel daggers were ideal in battle for puncturing chain mail, and although they would not have been able to punch through plate armour, they could be forced between the joints in a suit of armour and helmets. This was often the only way in which a heavily armoured knight could be killed.

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