Three techniques for improving your layout
numbers letters or other means The recording of move- ments will continue for as long as you think it is necessary to obtain an accurate picture of the worker's movement, which may last a few minutes or hours or a day. In case of long studies, you need to check with the worker concerned to make sure that there is nothing else which is usually done that has not been observed and recorded.
Now you can construct the string diagram. A scale plan of the working area under study must be made. Machines, benches, stores and all points at which calls are made should be drawn in to scale, together with doorways pillars and partitions that are likely to affect paths of movement. The completed plan should be attached to softwood and pins driven into it firmly at every stopping point, the heads being allowed to stand well clear of the surface (by about 1 cm). Pins should also be driven in at all the turning points on the route. A piece of thread is then taken and tied round the pin at the starting point of the movements (ie, the inspection bench l in figure 1) It is then led around the pins at the other points of call in the
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