Reminds me of a traditional harpsichord builder I heard of. When starting a new instrument, he defines the "inch" for that instrument which is the width of the key. He sets his calibers for that, measures 8 inches for the width of an octave. And so on, everything is done geometrically, like they used to do in the "good old days" before this fixation of numeric methods. His instruments are of very good quality.
