| Grand piano F 227,197,172 |
| hammer-blow |
45 mm |
| let off |
2 mm |
| drop |
1,5 mm |
| catch bass |
18 mm |
| catch middle |
15 mm |
| catch treble |
13 mm |
| half way |
23 mm |
| key dip |
10,1 mm |
| hight of sharps |
12 mm |
| touch weight |
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| 1 - 15 |
54 gr. |
| 16 - 29 |
53 gr. |
| 30 - 44 |
52 gr. |
| 45 - 59 |
51 gr. |
| 60 - 73 |
50 gr. |
| 74 - 88 |
49 gr. |
| damper-check rail tollerance |
1 mm |
| hammer travel |
not too fast |
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