The Park Tool TM-1 Spoke Tension Meter is a precision diagnostic tool that helps you measure the tension of wheel spokes accurately and consistently. Proper spoke tension is essential for wheel strength, durability, and true alignment; uneven or incorrect tension can lead to wheel wobble, premature spoke breakage, and poor ride quality. The TM-1 lets home mechanics and professional techs assess and tune tension with confidence, speeding up builds and truing sessions while improving overall wheel performance.

This torque-free instrument uses calibrated scale readings and a simple interface to determine relative spoke tension by measuring deflection under pressure. It’s designed to work with a range of spoke sizes commonly used in road, gravel, and mountain bike wheels. By reading and comparing tension values, you can identify mismatched spokes, correct inconsistencies, and achieve a more reliable wheel build. The compact size and ergonomic shape make it easy to use in a workshop or take on the road for adjustments during travel or race support.