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    Video-Trainings: testo 400 and testo 420

    With our testo 400 and its wide range of probes, standard-compliant flow measurement and documentation was already child's play.

    Now, in combination with our testo 420 measuring bonnet, you can also measure the volume flow at large outlets.

    • Connect the testo 420 to the testo 400

    • Carry out measurement

    • Send measurement report