Tom tested the speed of it one day with a special anemometer, and found that only a few hundred feet inside the zone the wind blew nearly one hundred miles an hour.
"Tom Swift and his Air Glider or, Seeking the Platinum Treasure"
Victor Appleton
She hardly moved a foot in either direction, and yet the wind, as evidenced by the anemometer was howling along at a hundred and twenty miles an hour!
"Tom Swift and his Air Glider or, Seeking the Platinum Treasure"
Victor Appleton
Wren also had an anemometer, but we have no description of it.
"The Introduction of Self-Registering Meteorological Instruments"
Robert P. Multhauf