Applied Motion Study
A Collection Method to industrial Preparedness

CHRONOCYCLEGRAPH DEVICES 87 cross-section it with white lines at any distance that may be desired. Then photograph this screen at any place, or places, desired, by expos- ing the film each time that the screen is at a dif- ferent pre-determined place. It is important that the time of the exposure of the screen be right, otherwise it may either be difficult to see the screen, or, on the other hand, the screen may be so prominent that it interferes with seeing the records of the motions themselves easily. The cross-sectioning being properly made, expose the now cross-sectioned film, and photograph upon it the work being studied. The resulting photo- graph gives the path of the motion laid along the cross-sectioned plane divided into any space elements desired. The penetrating screen, there- fore, now furnishes the last desired feature for measuring and recording, namely, exact distance of motions. This, in combination with the fore- going list, now gives us records of exact speeds. For some types of activity, such as handling a drill press, a record taken from one direction was satisfactory, and its close study enabled one to double the output of the machine with no added fatigue to the operator. With other operations,