The Stradivarius iso line layout

measured by Otto Möckel

The figure shows the measured belly in its state of condition. In spite of the hand made shape it is easy to find congruent "elements" in and between both "upper" and "lower" part of the arch, here marked with equal line numbers.

The measured back in its state of condition.

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Calculated 3D iso lines with "equal width" by the author

Explanatory text about 3D congruence and element-lines

Calculated 3D iso lines by the author

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Guarneri del Gesu iso lines measured by Möckel

Sacconi "belly" iso lines

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Sacconi "back" iso lines

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