Applied Motion Study
A Collection Method to industrial Preparedness

64 APPLIED MOTION STUDY two decisions and two motions to press the stop- watch. These “ groups of motions ” were some- times described at greater or less length, the ac- curacy of the description depending upon the power of observation of the recorder and the de- tail with which the time at his disposal, his will- ingness and his ability to observe, permitted him to set down his observations. Through our earliest work in making progress records we recognised the necessity of recording time and conditions accurately and simultan- eously, the records being made by dated photo- graphs. This method was particularly applic- able in construction work,1 where progress pic- tures taken at frequent intervals present accu- rate records of the surroundings, equipment and tools that affect records of output of various stages of development. In making more intensive studies of certain trades, such as shovelling, concrete work, and bricklaying, we found it advantageous to photo- graph the various positions in which the hands, arms, feet, and other parts of the body involved i See “ Concrete System,” Engineering News Publishing Co., New York.