Park Tool TM-1 Spoke Tension Meter
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The TM-1 Tension Meter accurately and reliably measures the absolute tension of each of the spokes in a wheel, as well as the relative tension between all the spokes in a wheel. Easy to use and priced affordably, the TM-1 works on nearly any bicycle spoke—no matter what the diameter, material, or shape. The TM-1 is for anyone building or truing wheels, diagnosing wheel problems, or assembling new bikes. It’s a tool that belongs on every workbench.
The TM-1 Tension Meter includes a printed table to convert tension readings to kilograms force. For steel spokes not found on the printed table, you can generate custom conversion tables using the Wheel Tension App. The app also provides an interactive tool to help visualize and analyze relative spoke tension.
Park Tool offers calibration and repair services to keep your TM-1 working optimally and accurately. For more information, see the TM-1 Service & Repair page.
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