Contact Don Mitchell at the Piano Hospital. www.pianotuningschool.org You will find it was developed by a blind person or two as I remember. William -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070719/c78d1389/attachment.html
This PTG archive page provided courtesy of Moy Piano Service, LLC