FIELD: clerical aids. SUBSTANCE: device for installation of ring folder in position, in which folder backbone faces upwards, has base furnished with two grooves made for engagement with rim zones of covers, the most distant ones from folder ring backbone, and have a width somewhat larger than that of cover. Length of both grooves exceeds cover height, and their depth is such that edges of pages in folder at its installation in device do not touch the base. At least one of sides of ring folder cover is placed at an angle between 30 and 90 deg. relative to its horizontal position. EFFECT: enhanced convenience in use. 10 cl, 3 dwg
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