David Great minds think alike? By the way I have had tools avaialble for a couple years now if any are interested. It has a scale on the back with a 6 mm foot. Dale -----Original Message----- From: David Love <davidlovepianos at comcast.net> To: pianotech at ptg.org Sent: Fri, Jan 29, 2010 3:07 pm Subject: [pianotech] Action ratio tool Just thought I'd share this. An action ratio measurement tool. Made from a iece of scrap bridge cap maple about 5" x 1/2" x 1/2" with a machine screw et into the block and therefore capable of a very fine and precise djustment in height, a couple of jiffy leads to just hold it down on the djacent keys without depressing them. Pretty simple. The nice thing is hat it's thin enough that you can slide it back and forth across the length f the head of the key easily and see how the ratio changes depending on the oint at which you depress the key. The machine screw here is set at 6 mm hich seems a good number as that's just short of where the jack tender ontacts the let off button. David Love -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100216/2e356269/attachment.htm>
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