フランス式ブックレット
弦のテンションを落とす
弦の太さを測定
1927年製ERARD モデルN°0 グランドピアノ1m80
弦を取り外す前に、まずはテンションを落とします。
鉄骨に負担をかけないよう、少しずつ少しずつ、全体をまんべんなく、何度も行き来しながら緩めていきます。
十分に緩んだら、全ての弦の太さを測定しておきます。
STOP WAR
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