Hi Jim, I feel it is the humidity change. I have noticed differences, much more than .3. I have meant for years, to keep track of the numbers, re date, humidity and amount off pitch. But I always forget. If someone else, has done this, I would be interested in the results. As to whether it would make a 'noticeable' difference to the tuning, is another question, as different people have different tolerances. Regards, John M. Ross Windsor, Nova Scotia, Canada jrpaino@win.eastlink.ca ----- Original Message ----- From: "James A Busby" <jab367@email.byu.edu> To: "College and University Technicians" <caut@ptg.org> Sent: Tuesday, March 18, 2003 6:29 PM Subject: Re: Records in piano > Jeff and list, > > Concerning leaving FAC numbers in piano, why is it that the numbers change a > little from month to month? (slight, say .3) It may be close enough not to worry > about, or is it? I've done it enough to see that it isn't just the way I > measure. > > Over several years I've kept track of numbers and their changes and wonder if it > is valid to use old numbers. Any feedback? > > Thanks > Jim Busby RPT > BYU > > _______________________________________________ > caut list info: https://www.moypiano.com/resources/#archives
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