To provide an input aid added with a page presser function and a measure for eye line.

This page presser is equipped with a rotatable disc-like height-adjusting circular disc fitted to the face part of a case, a stretchable bar-like member fitted at a right angle with the circular disc near the outer periphery of the height-adjusting circular disc, an opening part through which a magnet is vertically movable, formed in the bottom surface of the case, and a push-up opening part formed on the opposite sides respectively. In addition, a tapered magnet fitting member integrated with the magnet is pushed up by a push-up guide fitted to the push-up opening part, a push-up member which slides the push-up guide and the tapered tip of the push-up member.