magnetism recording

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-05-24-210115-42598d4-013375#ico_minus">