Park Tool TM-1 Ray Tensiometer

The TM-1 accurately and reliably measures the absolute voltage of each wheel spoke and allows the relative stresses of all spokes to be determined. Easy to use and affordable, the TM-1 works on almost all spokes, regardless of material, diameter or shape. It is not a tool intended only for professional mechanics, the TM-1 is for all those who assemble, center and repair the wheels. A tool that should make a beautiful view of itself on every workbench.

Note: The TM-1 tensiometer is supplied with the indispensable conversion table, laminated type, to convert the reading of the instrument into voltage expressed in Kgf. Given the availability of new aerodynamic radii, we provide a web page that works as a calculator for aerodynamic spokes not present in the table.