This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Loulie's tuning chart. en Proportions of Louli's tuning chart from engraving in Machines et inventions approuves par l'Acadmie Royale des Sciences Paris Engraving of French Academy of Sciences to PDold The engraving is detail of larger illustration of Louli's sonomtre PDold Inventions Acoustics Music diagrams