Device for setting the intonation of the individual strings of a fretted string instrument

摘要

A device for setting the intonation of the individual strings of a fretted stringed instrument, such as a guitar, wherein the instrument bridge includes for each of the individual strings both an end restraining and a fine tuning apparatus, for instance, of the type disclosed in Rose U.S. Pat. No. 4,497,236; the intonation setting device comprises a tool that includes a first rigid carriage member formed at one end to seat against the bridge rear end on either side of the fine tuning screw of the string to be set by the tool, and formed at its projecting end with a flange that journals an adjustment screw, and a second rigid follower member slidably mounted within the first rigid member intermediate the ends of the latter, and having a foot that seats against the head of the string clamp screw, and a flange that is threadedly enaged by the adjustment screw, whereby when the tool first and second rigid members are seated as indicated, the adjustment screw actuated to adjust the tool members into firm contact with the bridge parts they seat against, and the string tensioning apparatus anchor screw is released for adjusting such apparatus longitudinally of the bridge, the tool is actuated to set the intonation of the string, after which the string anchor screw is retightened and the tool removed and applied to the next string of the instrument that requires the same adjustment.