Anemometer

Anemometer

Anemometer

Inv. 425
Interpretation by Alberto Mario Soldatini e Vittorio Somenzi, 1953

For measuring how fast you go per hour with the course of a wind. Here you need a clock that will show the hours, points, and minutes.

Leonardo drew this anemometer for measuring the strength of the wind, with an anemoscope positioned on top of it to indicate wind direction. The model is constituted of a wooden supporting structure upon which a graduated sector of a circle is positioned. A thin copper strip hangs hinged on the upper support. Above the structure, a cylindrical extension houses an anemoscope rotating on a pivot, constituted of a pennant with ball head and fletched tail. In accordance with the wind speed, the copper strip rotates within the graduated sector of the circle. The anemoscope turns to indicate the wind’s direction.

The model is based on the drawing:

  • Codex Atlanticus f. 675 r. (1487)
    Milano, Biblioteca Ambrosiana