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AW: 2. Präsidentenbrief vom 27.02.2011 - Absatz "Schlägerkontrollen"
Hier dann der entsprechende Auszug aus T9...
7. To start with a measurement of the gases released by a racket, read the background level on the display and write this reading in the Racket Testing Form 3a.
8. Then apply the cap to the middle of the racket for 20 seconds. After that, write the reading in the same form. The difference between the reading after 20 seconds and the background reading is the “real reading”.
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