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We have lift-off: PTB's laser hygrometer successfully completed 7 flights on a Learjet.
We have lift-off: PTB's laser hygrometer successfully completed 7 flights on a Learjet 35A and in doing so confirmed that it can be used as a comparison standard for other humidity-measuring instruments. Such a metrological standard is necessary to enhance the weight of evidence of measurement data. (Photo: Rolf Maser, enviscope GmbH)
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