Universal spoke tension gauge Unior measure the spoke tension, whatever the radius type. This mechanical gauge is supplied already calibrated and ready to use. To use, simply press on the handle to position the beam between the two arms and release the handle. A well positioned gauge is easy to read. The reading should then be checked on the printed table provided, where you can read the actual voltage according to the specifications of the radius concerned. The table is supplied with the tool, and a more detailed manual. As additional equipment, the tool also has a beam thickness gauge, which facilitates the work in progress. Simply insert the radius in one of the top openings and read the displayed value.