|Wind Speed will be measured
by using an electronic device called a Turbometer.
The turbometer is held so that wind blows through the back of the meter,
and the wind speed in knots is read directly from the scale.
Directions for Use.
Click on the image to see the instrument in operation.
If possible, select a position where a steady flow of wind is occurring.
Move the slide switch to the desired scale, and turn the machine on.
Hold the Turbometer into the wind, and wait about 4 seconds to get a steady
reading. You can tell the wind direction from the direction of loose sand
Record the wind speed in your data sheet.