| 摘要 |
he invention relates to a tuning device meant to readily change with one mere left-to-right or inverse movement the chords or the tonality of stringed musical instruments. It bears a specially - shaped body (1), the base (2), and the surfaces (5,6)at the lower part of the body (1). The change of the tonality and chords depends optionally on the surface (5,6) whereon the body (1) will be seated. |
