The use of this Swedish fire steel is to produce fire sparks when building. It is rated as the best since it can work under all kinds of weather condition and any altitude. This tool originated from the department of Swedish defense. It has been used by armies all over the world. Its popularity grew and was adapted and used to light stoves and gas barbecues.
To light fire using this tool, you just metal blade across the firesteel. Once the sparks are generated, throw them to small pieces of grass. Add some thin sticks and there you have your fire.