This devise is a measuring cylinder relates to a holder, measuring cylinder according to the present invention holder in the front bupan, the rear plate, the left side bupan, right side bupan, top bupan and if you include bupan and library of cube form in which the empty space inside the form body and, with the front cover is hinged in front of the front bupan to cover the front bupan of the library member which is configured to be opened and closed, it is hinged behind the rear plate so as to cover a rear plate of the library material back which is provided openably cover, constitutes the front bupan and the rear plate and parallel to the interior of the library body vertically erected middle bupanwa, the front bupan and the intermediate bupan facing horizontally back and forth in each of between the front bupan and the rear plate a plurality of first formed in the position the first support hole and the rear plate and the intermediate bupan is configured to include a plurality of second support hole formed in the position facing the horizontal back and forth in each measuring cylinder a first of the front bupan 1 through the supporting hole and the first support hole of the intermediate bupan and or supported by a flat state levels so over a peripheral portion of the peripheral portion of the first support hole of the intermediate bupan of the first support holes of the front bupan, scalpel cylinder is leveled so over a peripheral portion of the second support hole of the rim portion and the intermediate bupan of the second support hole of the rear plate a second support hole and the through the second support hole of the rear plate and the rear plate of the It is configured to be supported in a flat state.