[werk_ag]

I believe the (claimed) corresponding figure for the Fine Offset is 1.5 mph (per pps) or 0.67 metres/sec, ...

Hi,

Some time ago, during more or less a month, I have installed side by side an FO and a Inspeed Vortex Digital 8. Supposing the Inspeed is more reliable (and it is) than the FO, I found that to get similar readings for the average wind speed with the FO, a had to slightly change the claimed values from 1.5 mph (per pps) or 0.67 metres/sec, to 1.4 mph (per pps) or 0.63 metres/sec. For FO anemometers the WeatherDuino Pro2 software is using the last values.

Regards