笔者从事钢琴调律工作20多年了，有一些想法希望通过《乐器》与同行们交流一下。在此首先谈一下调立式钢琴时调音扳子的应用问题。我以为，作为一个钢琴调律师，有必要弄清楚弦轴钉的立体方位，一要求扳子口套人轴钉后旋转轴订之立体方位要准确，不能有左右上下之偏差，否则会 I work in piano tuning more than 20 years, and some ideas hope that through the “instrument” to exchange with colleagues. Here to talk about the tuning piano when tuning the application of the problem. I think, as a piano tune lawyer, it is necessary to clarify the three-dimensional bearing string shaft position, a request wrench mouth sleeve after the axis of rotation shaft set the three-dimensional orientation to be accurate, there should be no deviation from top to bottom, otherwise will