Charts that compute

Catalogued

Ponchon-Savarit diagram

Made by
Marcel Ponchon (1921) and Raoul Savarit (1922)
Year
1921-1922
Field
Chemistry and biochemistry
Kind
Computing chart
Room
Charts that compute — Placed by reading its description, not yet studied
Skeleton drawing, not the original plate

5 other forms share this skeleton

Source

Ponchon 1921, Etude graphique de la distillation fractionnee industrielle, La Technique Moderne 13

Attribution less certain: contested, or no single inventor recorded

Searches, not citations

archive.orgcommons.wikimedia.orgscholar.google.com