Old v-shaped peson or v-shaped dynarmometer steel folk art

Descriptive: Old v-shaped peson or v-shaped dynanometer. Steel. Partially erased marking. On the top arch on the right side we can see graduations, on the second arch the inscription hamon. To be confirmed. A dynamometer formed by a flexible steel blade, curved in the shape of a v, at each of its ends, is fixed a metal arc that crosses an opening near the other end. One of these arches ends with a ring, which serves to support the instrument, the other, with a hook. To graduate the instrument, weights of 1, 2, 3, 4 kilograms, etc. Are successively suspended on the hook; the spring bends more and more and each time marks the point of the outer arc that corresponds to the opening of the branch it crosses. State: Note wear and friction, scratches, rust. Sold as presented. Size: Height of v: 10.5 cm width of v: 11.1 cm depth: 2.2 cm diameter of round: 3.5 cm. F403.