Bill- The old Everett number was model 11 for the 45" school studio, 21 (same scale) for the church model, and 31 (same scale) for the residential model with free standing legs. A church client of mine has the Yamaha Everetts, model 1152 school studio and model 2165 for the church model. To my knowledge the scale is the same on all of them, as one page on my Accutuner III works for all of them. I hope this helps. Bill Maxim
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