To enable a person who actually uses a building to arrange a paper holder in the most adequate position before the design of the building, to confirm the position by actually using the paper holder and to incorporate the thus determined position into design.

A member 11 to be adhered is mounted an a wall 5 alongside a water closet bowl 6 of a toilet. The member 11 to be adhered is provided with graduations 22 and an adhesive member 21 is mounted at the rear surface of the paper holder 10. The paper holder is detachably mounted at an arbitrary position of the member to be adhered. The wall to be mounted with the member to be adhered is made movable.