Air Speed Indicator small fan anemometer by Davis Derby Ltd. designed by Busk for long distance measurements Air Speed Indicator small fan anemometer
Air Speed Indicator - Fan Anemometer No. 1071 (the first fitted to aeroplanes in this country) Air Speed Indicator - Fan Anemometer No. 1071
8 vane portable anemometer, lacks dial but with cable to ?recorder. With clip to fit pole mounting. 1930-1960 8 vane portable anemometer 1930-1950
Biram's Patent Anemometer, early example 12" wheel Biram's Patent Anemometer, early example 12" wheel