The technique was developed by Frank Gilbreth and his wife, Lillian in the early 20th century to improve work methods. The couple employed time-lapse photography to reduce a complete work cycle to the shortest and most efficient sequence of gestures.
From image verso: "Left hand of drill press operator 'Positioning
after transportation' (this study resulted in cutting the time in
halves)." Machinist with light showing hand movements, circa 1915.
Collection: Frank B. Gilbreth Motion Study Photographs (1913-1917).
Repository: The Kheel Center for Labor-Management Documentation and