Dendrochronology is fast becoming a very important part of a thorough assessment of a musical instrument. While CT scans will deliver a wealth of invaluable information as to condition and physical characteristics of the components of the instrument, a successful dendrochronological test can reveal interesting associations, confirming correlations with other instruments in the database made in the same workshop, town or country.

The remit of a dendrochronological test is primarily to determine an earliest possible felling date of the tree or terminus post quem, which in turn leads to an earliest probable manufacturing date. The report will contain information regarding the most important statistical correlations obtained, both with individual instruments, instruments chronologies, and reference chronologies, some of which are in the public domain. These will often be illustrated with graphs, comparing the similarities between two or more graphed sequences of tree ring measurements, often referred to as "curves".

In the last few years, and with the increasing resolution obtainable from digital photographic equipment, the tests can now be carried out very successfully from digital files. The images will be produced as optional addition to the standard condition report. These investigations will also help insuring the continuity and accuracy of the tree ring sequences, with information on invisible repairs, or presence of newly inserted wood, which might disturb this continuity.

A dendrochronological report will undoubtedly enhance the pedigree of a genuine instrument, adding invaluable information not otherwise available by any other type of investigation.