Does anybody have a TuneLab file or similar with measurements of the iH of these Ritmüller grands?

Or just experience tuning them, ETD or aurally?

How do they behave across the tenor break? Any major jump in iH?

How about tunability in general, false beats etc.?


Nordiska 120CA (Dongbei) upright from about 2004, Kawai MP11 digital piano, Sennheiser HD 600 headphones.