A wandering piano tuner 音の細道, ピアノ調律師のつぶやき。
Thursday, February 16, 2017
a hammer shank support block of grand piano
これは、Ｇｒａｎｄ
Ｐｉａｎｏ のＳｈａｎｋ Ｓｕｐｐｏｒｔ Ｂｌｏｃｋ です。
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