First photograph of “penetrating screen” in the path of the motions. The screen is erected in the plane of the edge of the table and the hand, arm, and face are penetrated by it, as can be plainly seen in the stereoscopic record.
from chapter “Chronocyclegraph Motion Devices for measuring achievement,” in Frank Bunker Gilbreth (1868-1924 *) and Lillian Moller Gilbreth (1878-1972 *). Applied motion study : a collection of papers on the efficient method to industrial preparedness.
New York, 1919
Harvard copy, digitized April 21, 2008
conceptual writing; grid; penetrating screen; tables
F. B. Gilbreth and L. M. Gilbreth, “Chronocyclegraph Motion Devices” (1919)