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Testo 0560 4170 ABS Large Vane Anemometer, 4" Head Diameter, 32 to 122 Degree F Range, +/- 0.9 Degree F Accuracy, 0.1 m/s Resolution, 9V Battery: Science Lab Anemometers: Amazon.com: Industrial & Scientific
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Testo 417 Digital 4 Inch Vane Anemometer Kit with Measurement Funnels, Flow Straightener, and Smart App Connection
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