Franz Gall, a German physician and anatomist, invented the psychograph machine in the early 1900s to improve the accuracy of phrenology measurements.

Name: Franz Gall, a German physician and anatomist, invented the psychograph machine in the early 1900s to improve the accuracy of phrenology measurements.
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Franz Gall did develop the theory of phrenology, but he did not invent the psychograph machine. The machine was actually invented by his disciple, Johann Spurzheim.

Franz Gall, a German Physician and Anatomist, Invented the Psychograph