Vertex mechanism according to Otto Fischer. The entire vertex of the human body, as an addition of all vertexes of all body parts in every optional position in the projection onto the median plane, is constructed by this mechanism automatically. The mechanism demonstrates very precisely the changes of the entire vertex as well as of the single parts of the human body in correspondance to the movement of any joint. A more detailed description in: Otto Fischer, Der Gang des Menschen, II. part: Die Bewegung des Gesamtschwerpunktes und die äußeren Kräfte. Abhandl. der math.-phys. Kl. der Sächs. Ges. der Wissenschaft. volume XXV n°. 1, pages 20ff. kg 4,600.
