Abstract
Results of studies on economical efficiency in the case of making the selection of looms had been presented in the previous reports. In connection with them, the results of economical studies on the size of warp beam are presented. After showing the relation between the size of warp beam and profit obtained by using its beam, the example of LW type loom is reported. In this example the most suitable diameter of beam is 0.7〜0.8m for LW type loom, and the variation of values of parameters has a less effect on it.
