Vintage Dwyer Instruments Wind Meter With Pouch Instructions 2 to 66 mph gauge | eBay
Portable Wind Meter | Portable Wind Meter that is a direct reading with no calculations. Made from sturdy plastic and has a case. | Dwyer Instruments
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
Wind Meter – Terra Tech
Dwyer RMC-105 Flow Meter, 10" Scale, 60-600 SCFH Air
Dwyer WIND METER-KNOT Portable Wind Meter | Transcat