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Protmex MS6252B Digital Anemometer Humidity Temperature Testers Meters USB Handheld LCD Electronic Wind Speed Air Volume Measuring Meter Backlight : Amazon.co.uk: Business, Industry & Science
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3: Instrument used to measure temperature, relative humidity and airflow. | Download Scientific Diagram
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Measuring instrument Testo 435 and probe to assess indoor air quality... | Download Scientific Diagram
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