Meteorological Office pattern sensitive-fan
Meteorological Office pattern sensitive-fan, wind speed and direction transmitter, agricultural type, by S & J Engineering (Henley) Ltd. 6 fans
Meteorological Office pattern sensitive-fan, wind speed and direction transmitter, agricultural type, by S & J Engineering (Henley) Ltd. 6 fans, rectangular vane
Meteorological Office pattern sensitive-fan, wind speed and direction transmitter, agricultural type, by S & J Engineering (Henley) Ltd. 6 fans
Rectangular vane, from Meteorological Office pattern sensitive-fan, wind speed and direction transmitter, agricultural type, by S & J Engineering (Henley) Ltd. 6 fans