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Abstract
This study was concerned with a systematic evaluation, through a series of experimental trials, of the angular orientation of the side panels of an operator's console. Since both a single operator and paired operators had to be accommodated, the trials embraced both of these conditions. Seven different measures were used. The single operator data showed a consistent pattern pointing to the choice of the greatest angle (closest to the operator) tried. The paired operator data gave inconsistent indications. A balanced resolution of all the data indicated a choice of 50° or 55° as the best angle taking all the conditions of use into consideration.