Wireless anemometer

The Yellow Jacket brand YJACK FLOW wireless anemometer from Ritchie Engineering Company measures the air speed in ducts and ventilation systems, allowing technicians to view air velocity readings instantly on the integrated screen. Technicians can also use the anemometer app to calculate volumetric readings (cfm) for rectangular and circular ducts. The lightweight and compact instrument features a magnetic mount, carrying case, and an interchangeable 18-in. telescopic probe for residential and light commercial systems. A 36-in. probe for larger systems is sold separately.


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