Recorder of the anemometer Richard Frères, belonged to De Marchi. First half of the last century.

This apparatus for recording wind speed and direction was connected to an external sensor, now lost. The drum rotating by a clockwork movement housed a paper chart on which four needles, one for each cardinal point, were marking the wind direction while the longer needle recorded the wind speed. The recorder is in a wooden box and was built by Richard Frères, Paris, in the early decades of the last century.