Bocana Tension Meter - Tension Gauge 2.5mm - 4mm.

Professional Rig Tension Gauge for wire sizes 2.5mm to 4mm. Works with the same scale as the industry standard Loose tension gauge.  To operate, remove the spring from the travel pin and attach to the slider, then operate as normal.  When finished, keep the spring in good condition by replacing on the travel pin.

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