This is a vintage black and white illustration, likely from a mathematical or engineering text. The top portion of the image features a complex geometric diagram. A heptagon (a seven-sided polygon) is prominently displayed, with its vertices labeled with letters (A, B, C, D, E, F, G, H, I, L, M). Lines connect the vertices, creating a network of triangles within the heptagon. To the left of the heptagon is a vertical scale labeled 'Echelle' with markings indicating units (20, 40, 60, 80, 100). Above the heptagon is a decorative banner with the word 'HEPTAGONE' and 'Sevenhoek' written on it. The number '28' is in the top right corner. The lower portion of the image depicts a scene of people engaged in a tug-of-war. Five figures are pulling on a rope, with two on one side and three on the other. They are dressed in what appears to be 18th or 19th-century clothing. The scene takes place in a landscape with a tree on the left and a body of water in the background. There are fallen figures on the ground, suggesting a struggle. The style of the illustration is reminiscent of engravings or etchings from that era, with detailed linework and shading.