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The 21210 fits in the base of a #40C Anemometer or 200P Wind Vane. The 21210 is then attached to a crossarm of a tripod or tower via the CM220 Right-Angle Mount or 1049 Nu-Rail Crossover Fitting. Both the anemometer and wind vane are manufactured by NRG and are typically used in wind prospecting applications.

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Common Accessory for the following products:

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