ERT300 Tennis String Tester - ERT Technic AG
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ERT300 Tennis String Tester - W & D Strings
ERT-300 Tenniscomputer, 179,90 €
Eastern Region Tennis, Melbourne, Victoria - Making Tennis Fun
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Electronic Tension Reader - ERT 300 | Tennis Warehouse Australia
String MD - I use an ERT 300 tennis computer to measure the dynamic tension on every string job. The ERT 300 measures the DYNAMIC TENSION DT (string bed stiffness) by electronic
