URBINO. A new centre of the highest significance to Italian stringed-keyboard instrument design and construction.

This section is unavailable temporarily for reasons of copyright. When its contents have been published and are accessible normally in the public domain,

it will be shown mathematically and scientifically here that the RCM0001 clavicytherium was made in Urbino. This is simply because all of the measurements of its case,

keyboard, string and pin spacings, and all of its string-scaling measurements, are based on the Urbino oncia, or inch.

The proof of the instrument's origin, with all of the details, will be uploaded here when these are published and are in print in the public domain.

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First Part: The RCM clavicytherium.

This instrument is one of the most elegantly-designed harpsichords in the entire history

of harpsichord making in Europe. It was designed and built in about 1455 in Urbino, by the

brilliant polymaths working at the Court of Federico da Montefeltro, Duke of Urbino.

In the author's opinion its design has never been superseded since the time of it's

design and construction, now more than 550 years ago!