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Stringbed stiffness…some thoughts | GGT Extra
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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
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Lommer, Pairone Wrap Up Action at ITA All-American Championships - University of Michigan Athletics
BEERS ERT 300 Tennis Computer- A Must Have for any Racquet Stringer & Tennis Enthusiast | The Tennis Depot Blog
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