This is a generic Magnetic Compass used in aircraft. It includes a Compass Deviation Card. 磁気コンパス コンパス 方向 磁気コンパス
meant for a group logo of functional materials. it consists of a hysteresis loop in a gradient of colours. A magnet, a pn junction with holes and electrons, some wavy arrows showing field movement. an AFM tip on a topography. pe ループ ヒステリシス afm 探針 機能性材料
red blue south north bar magnetic lab magnet laboratory physics magnets poles bar-magnet Bar Magnets clip art マグネット バー磁石クリップ アート