Well, that is just me being unnecessarily thick! Every representation I had seen showed measuring diagonally from balance point to key front / capstan. Thank you , David. Can you do it this way because the measurement at the bottom instead of diagonally gives the same results? If we could also explore a little more- once the action ratio is obtained , my understanding is that it is inverse to strike weight, higher ratio drives lighter hammers better with fewer touch weight problems and vice versa? D Brown
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