Shizou Kakutani's Geometry Set

Effects
Consisting of a compass, square, protractor, ruler and graphing paper. Measuring around a person or object will make them into a fixed point, unable to leave from their enclosure. Drawing around an accurate representation such as a map will also have the same effect, preventing anything from entering or exiting. Subjects' thoughts are immediately written down on the pad and ripped away, completely forgotten unless reunited with the person.