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405 Testo Velocity Stick Anemometer -- $179.95 -- Testo 405 Thermo-Anemometer is an economical way to get highly accurate hot-wire velocity measurements (metric units m/s only). This mini-anemometer also measures air temperature and enables entry of duct cross-sectional areas for . . .
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425 Testo Hot Wire CFM Anemometer -- $629.00 -- Testo 425 Product Sheet The compact testo 425 is an easy to use anemometer with attached thermal probe on a telescopic handle. Just enter the duct measurements directly into the testo 425 and volume flow measurements . . .
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