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Frey Scientific Wind Speed Meter
Dwyer Instruments Wind Speed Meter, 0 to 80 mph MARK II WSI | Zoro
Dual Wind Meter with Plastic Case, Dwyer
Dwyer Vintage Hand Held Wind Meter ~ Dwyer Controls Gauges | 2~66 MPH | eBay
Dwyer WIND METER-KNOT Portable Wind Meter | Transcat
Mark II WSI | Wind Speed Indicator is a molded white plastic instrument that indicates wind speed directly on liquid filled scale. Low cost and practical. | Dwyer Instruments