2 x anemometers (wind meters) (Ordsall DN22)
1 x digital (needs new battery) & 1 purely wind powered anemometer. Both fully functional, & can measure in mph/kph/metres per second etc. Fascinating to measure the windspeed - 42mph gusts the other week! (Smoke/pet free household).
This offer has been gifted to someone and is no longer available.