June 2006, the “185° Rgt. Ricognizione ed Acquisizione Obiettivi” (Target Acquisition Regiment) airborne “Folgore” (185° RAO) commissioned to Eytrema Ratio the developing of a special knife based on specifications concerning their special duties.
The 185° RAO, is the only unit in the Italian Armed Forces in charge of long range recons and to acquire several kind of targets to be engaged with artillery, helicopters, aircraft and battleships suppression fire, across all the possible theatres during armed force, interforce and multinational force operations. A very delicate and dangerous duty, operated by detachments capable to penetrate, operate and survive in hostile surroundings thanks to a two years very hard training.
The result is the knife called RAO, a survival knife, not a big folder but a compact field knife with a strong and heavy blade and a very safe locking system, assisted by an extra safe device that turn the folder in a real fix blade knife. The blade opening and closing are acting with both the hands together to minimize the risk of self injuries.
The blade, because of it’s weight, it’s a real guillotine. The extra safe device is a steel pin to be hand screwed through two holes placed by the guard zone of the massive anticorodal aluminum alloy handle. This device is necessary because of the violence of the chopping performances expressed this uncommon folder.
The presence of this concrete pin between the blade and the user hands is a great psychological assistance to chop strongly and quickly. The sheath is an essential part of the system.It contain a diamond sharpener and allows the user to carry the knife in open condition, held by a two clip provided lace or in close condition inside the front pocket. The sheath can be hanged to the last generating combat jacket or standard belts thanks to M.O.L.L.E. system.
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Established in 1997 as a company manufacturing sporting knives, Extrema Ratio focuses on producing medium to high range quality knives.
The production began using industrial procedures combined with a hand crafted finish, and this method continues to be used today. The only processes which are industrialized or automated are those that guarantee uniformity and a high production capacity, while the processes which guarantee the quality of each single piece remain hand crafted. Any work that in its nature requires the skill of the craftsman, such as sharpening the blades, is carried out exclusively by hand.
Following contact with some specialised Italian Units that commissioned some special blades, Extrema Ratio began to pay serious attention to the development of knives for military use. Thanks to the interaction with Italian armed forces and later with other international forces, the company accumulated, and continues to accumulate valuable experience and information which has allowed it to develop blades which are both truly valid and professional.
The company deals with the development, making of prototypes and production of knives for use by the military, police and emergency services. We produce knives according to the buyer's specifications, or develop new products for the solution of problems indicated by the purchaser.
What is unique about the company is that it has worked together with the armed forces with the intention, and consequent success, of raising the standard for the quality and functionality of modern military knives. This high quality has been achieved through the projects, the choice of the best materials and the latest treatments.
Thanks to the development of specific instruments, the company also carries out its own internal tests on the efficiency and resistance of the product. The company benefits from collaboration with the Faculty of Motor Sciences at Perugia University, which has dealt with the ergonomic aspects of its products: this has given them the indispensable capacity for interconnection with the user.