Logigraph

Yoshichika wearing a Logigraph

A Logigraph (ロジグラフ Rojigurafu) is a piece of equipment worn by Logicalists, taking the form of an earphone with a mic.

When activated, the Logigraph says "Judge your logic," then generates a screen in front of the user's eyes. Once on, a Logigraph has a variety of functions, including data analysis, communication, closing gates, and forming covenants. Staff members in an ALCA control room are responsible for analyzing and calculating data sent from Logigraphs.

The voice for the Logigraph units is provided by Suzuko Mimori.

Gallery

Tamaki using her Logigraph to analyze Mana's wounds

Tamaki using her Logigraph to close a gate

Luck & Logic anime
Characters	Yoshichika Tsurugi ● Athena ● Tamaki Yurine ● Venus ● Chloe Maxwell ● Valkyrie ● Mana Asuha ● Artemis Veronica Ananko ● Nemesis ● Yukari Nanahoshi ● Olga Breakchild ● Shiori Tsurugi ● Rentaro Tsurugi ● Belial Utsutsuno Jarno ● Lucifer ● Quetzalcoatl
Terminology	Another Logic Counter Agency ● Covenant ● Demon god ● Foreigner ● Gate ● Logic ● Logic Card ● Logic Drive Logigraph ● Logicalist ● Overtrance ● Paradox Zone ● Paradox Sick ● Septpia ● Tetra-Heaven ● Trance (Trancejack)
Music	STORY ● Beyond the Covenant ● SONGS & MELODY (Album)
Episode List	List of Luck & Logic episodes