| Edge Zero trem spring adjustment dial on the back of the guitar | 
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The ZPS3Fe is the third iteration of the Zero Point System, which simplifies the adjustment of a tremolo bridge through the addition of a dial in the spring cavity cover that allows you to adjust the spring tension with your finger (at the back of the guitar) without having to use a hex wrench.
See also: ZPS3.
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Related content: Tremolo bridges |
