The AV Production MP-HP-TS/F2 is a Fibonacci Marker, designed to divide a segment in the Golden Ratio proportion. Understandable practical tool when studying the theme of the golden ratio and harmonic proportions in the world around us. The theme of the golden ratio in the world around us is one of the most interesting in the geometry course. With the Fibonacci Marker students have the opportunity not only to listen to the teacher's story or watch a presentation, but also to see these laws in person: quickly and easily measure the proportions in a photo of an ancient temple, or the distances and lengths of the phalanges of the fingers of your own hand. Using the example of the golden ratio and Fibonacci's marker, we can show how the laws of mathematics are used in the modern world and how they may prove useful in a future profession: The proportions of many types of modern furniture are based on the law of the golden ratio, as you can simply see by measuring their dimensions; The proportions of many musical instruments are also based on the golden ratio.