Applied Motion Study
A Collection Method to industrial Preparedness

44» APPLIED MOTION STUDY upon this, where eighteen braiders had been as- sembled by one man in a day, it now becomes pos- sible to assemble sixty-six braiders per man per day, with no increase in fatigue. The accurate measurement involved in getting results like this includes three elements. We must determine, first, the units to be measured; second, the methods to be used; and, third, the devices to be used. The unit of measurement must be one that of itself will reduce cost, and should be as small as the time and money that can be devoted to the investigation warrants. The smaller the unit, the more intensive the study required. The methods and devices to be used are also determined largely by the question of cost. Nat- urally, those methods and devices are preferable which provide least possibility of errors of ob- servation. Such errors have been classified as of two kinds: First, errors due to instruments; and, second, errors due to the personal bias of the observer. The newer methods of making motion studies and time studies by the use of the micro- motion method and the chronocyclegraph method exclude such errors. Fortunately, through an