A cognitive capacity measuring device utilizes an image display unit for displaying different kinds of images that have been degraded from an original photographic object. The articles disclosed herein include a support member, such as a sling for urinary incontinence, tissue anchors, filamentary elements for associating the support member with the anchors, and introducer needles for placing the anchors in a patient. At least one tone contains a graphic. A rotor position estimating part estimates a rotor position of the synchronous generator from the detected voltage and current. The peripheral edge of the liquid surface is thus held before being ejected so that solder drops can be ejected steadily with a uniform diameter, constant direction, and constant speed.