wind vane


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wind vane:

see weather vaneweather vane
or wind vane,
instrument used to indicate wind direction. It consists of an asymmetrically shaped object, e.g., an arrow or a rooster, mounted at its center of gravity so it can move freely about a vertical axis.
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wind vane

[′win ‚vān]
(engineering)
An instrument used to indicate wind direction, consisting basically of an asymmetrically shaped object mounted at its center of gravity about a vertical axis; the end which offers the greater resistance to the motion of air moves to the downwind position; the direction of the wind is determined by reference to an attached oriented compass rose.

wind vane

A device to indicate wind direction. A wind vane always points into the wind. It works on the principle of weathercocking. See weather vane.
References in periodicals archive ?
Choose an open area, perhaps near your rain gauge, to place your wind vane.
2]) Because of time constraints, only 17 openings are measured using the anemometer with wind vane.
We've got a problem," The Skipper said - and it was more than a mast-top radio antenna having broken loose and decapitated our wind vane.
Measurements should be made with a low threshold, good quality cup-type anemometer with wind vane and an electronic data logger.
The subtle signs of slumping sand, which indicate the direction of prevailing winds as surely as a modern wind vane, became frozen in place when heat and pressure converted ancient dunes into sandstone.
Instead, hydraulics turn the turbine assembly, obeying a computer using information from a small wind vane mounted on top of the housing.
In the article "Stickbow True And False" (Bowhunting, May 2000), we incorrectly identified the picture on page 47 as a Wind Vane when in fact the proper name is a Rain Vane.
Ships first operated with a wind vane, similar to a weather vane, that was set at the top of the sail and connected to a series of gears inside the hull that turned the sail into the direction of the wind.
Under such background, the advance layout of Evergrande enables it to become the leading real estate enterprise with the wind vane effect in the second- and third-tier cities.
The new station has a digital thermometer, rain gauge, barometer, wind vane, anemometer and hygrometer.
The wind vane above the dial has also been removed and will be replaced with one similar to one seen in early photographs of the cross.