chronoscopes

But when it becomes his aim to discover mental features of the individual, and to foresee what he can expect from the social groups of men, every layman tells him condescendingly that it is a superfluous task, as instinct and intuition and the naïve psychology of the street will be more successful than any measurements with chronoscopes and kymographs.

Psychology and Social Sanity Hugo M��nsterberg 1889

In my laboratory in California alone I have as many as twenty rooms hung with electric wires and equipped with all the necessary instruments -- chronoscopes, kymographs, tachistoscopes, and ergographs, instruments which enable us to measure and record the human brain as accurately as the Bertillon system. "

The Third Degree A Narrative of Metropolitan Life Charles Klein 1891