Gene: The problem as I have run into is that the bridge top is not level along its length, and the calculations of net bearing from a zero on the speaking length (or the back scale length) don't account for the possible errors from a varying bridge top. Without taking both as components from a zeroed point, how can you tell where you actually have bearing or not? Yes, the net is important, but the components are too. And using the level to establish the consistency (or most often huge lack of consistency) in the bridge top is useful information. Is most of the bearing in the backscale? Or the front? Or the lack of it? How does one tell with a single measurement zeroed from the speaking length? Paul I cannot tell from one measurement zeroed from the spl. However, on a piano that is strung, how useful is this information? What can be done about where the bearing is or is not or how the top of the bridge is shaped without surgery? Possibly if bearing were adjustable it would be useful to know component bearing? What could be done with the information? Gene -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090526/1f1691de/attachment.htm>
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