Cool tablet push pins. Medically brilliant.
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gaibukioku reblogged this from stationerynerd and added:
なるほど画鋲はたいてい偶数で使うし、針が表に出た状態のがたくさん集まってる中から必要数を取り出すのは危ない。合理性を意匠として昇華させた好例。
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stationerynerd posted this
