hartmann
complete set packed in wooden case
consisting:
1 hartmann tuning fork c 64
1 hartmann tuning fork c 128
1 hartmann tuning fork c? 32
1 hartmann tuning fork c? 256
1 hartmann tuning fork c? 512
1 hartmann tuning fork c? 1024
1 hartmann tuning fork c 2048
1 hartmann tuning fork c 4096