The Divergence Meter is used to calculate what Attractor Field the universe is currently in. Throughout much of the storyline, Okabe tries to break the 1% barrier (create a world timeline change so significant as to raise the first, leftmost Nixie tube value from a 0 to a 1) to escape from the Alpha range, using the meter as a reference each time. Suzu-san had this. Do you know what the number means? She was always looking at it, from her hospital bed. "Is this the number before it changes or after? Did I manage to change it?" Whatever it was, it bothered her to the end. — Yuugo Tennouji