String instrument e.g. bass guitars has fret, which consists selectively movable staves, which are partially cut away over its length whereby length of fret in finger board corresponds the width of slots

摘要

String instrument has a fret (5), which consists of selectively movable staves, which are partially cut away over its length. The length of the fret in the finger board corresponds to the width of the slots. The fret in the recess, which are located below the slots in the finger board, are stored rotationally.