Vertical shaft for Robinson-Beckley anemograph, 1856
Vertical shaft for the Robinson-Beckley anemograph, 1856
Robinson-Beckley anemograph, 1856
Vertical shaft for the Robinson-Beckley anemograph, 1856
Components from the Robinson-Beckley anemograph, 1856. Including a 4 cup spoke assembly, recording machine, and wind direction gauge.